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100 Cards in this Set
- Front
- Back
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A passenger in the rear seat of a car moving at a steady speed is at rest relative to.
A.) the side of the road. B.) a pedestrian on the corner ahead. C.) the front sear of the car. D.) the wheels of the car. |
C.) the front seat of the car.
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Which distance can be most accurately measured with a ruler?
A.) the length of a river. B.) the width of the book. C.) the distance between two cities. D.) the size of an object under a microscope. |
B.) the width of the book.
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One kilometer equals 100 meters. What does the prefix kilo- mean?
A.) 1 B.) 10 C.) 100 D.) 1000 |
D.) 1000
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A person walks 1 mile every day for exercise, leaving her front porch at 9:00 am. and returning to her front porch at 9:25 am. What is the total displacement of her daily walk?
A.) 1 mile B.) 0 C.) 25 minutes D.) None of the above |
B.) 0
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A ball is rolled uphill a distance of 5 meters before it slows, stops, and begins to roll back. The ball rolls downhill 9 meters before coming to rest against a tree. What is the magnitude of the ball's displacement?
A.) 4 meters B.) 9 meters C.) 14 meters D.) 45 meters |
A.) 4 meters
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Displacement vectors of 4 km south, 2 km north, 5 km south, and 5 km north combine to a total displacement of.
A.) 16 km north B.) 11 km west C.) 6 km south D.) 2 km south |
D.) 2 km south
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What is the most appropriate SI unit to express the speed of a cyclist in the lase leg of a 10-km race?
A.) km/s B.) km/h C.) mm/s D.) cm/h |
B.) km/h
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Speed is the ratio of the distance an object moves to.
A.) the amount of time needed to travel the distance. B.) the direction the object moves. C.) the displacement of the object. D.) over the duration of the trip. |
A.) the amount of time needed to travel the distance.
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Instantaneous speed is measured.
A.) at the starting point. B.) when the object reaches its destination. C.) at a particular instant. D.) over the duration of the trip. |
C.) at a particular instant.
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The slope of a line on a distance-time graph is.
A.) distance B.) time C.) speed D.) displacement |
C.) Speed
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A horizontal line on a distance-time graph means the object is.
A.) moving at a constant speed. B.) moving faster. C.) slowing down. D.) at rest. |
D.) at rest.
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What is the speed of a bobsled whose distance-time graph indicates that it traveled 100 m in 25 s?
A.) 4 m/s B.) 2500 m/s C.) 0.25 mph D.) 100 m/s |
A.) 4 m/s
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Vector addition is used when motion involves?
A.) more than one direction. B.) more than one velocity. C.) more than one speed. D.) all of the above. |
D.) all of the above.
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The rate at which velocity changes is called.
A.) speed. B.) vectors. C.) acceleration. D.) motion. |
C.) acceleration.
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Objects in free fall near the surface of the Earth experience.
A.) constant speed. B.) constant velocity. C.) constant acceleration. D.) constant distance. |
C.) constant acceleration.
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Suppose you increase your walking speed from 1 m/s to 3 m/s in a period of 1 s. What is your acceleration.?
A.) 2 m/s2 B.) 5 m/s2 C.) 4 m/s2 D.) 3 m/s2 |
A.) 2 m/s2
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An object moving at 30 m/s takes 5 s to come to a stop. What is the objects's acceleration?
A.) 30 m/s2 B.) -30 m/s2 C.) -6 m/s2 D.) 6 m/s2 |
C.) -6 m/s2
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The slope of a speed-time graph indicates.
A.) direction. B.) acceleration. C.) velocity. D.) speed. |
B.) acceleration.
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An object that is accelerating may be.
A.) slowing down. B.) gaining speed. C.) changing direction. D.) all of the above. |
D.) all of the above.
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A train approaching a crossing changes speed from 25 m/s to 10 m/s in 240 s. How can the train's acceleration be described?
A.) the train's acceleration is positive. B.) the train is not accelerating. C.) the train will come to rest in 6 minutes. D.) the train's acceleration is negative. |
D.) the train's acceleration is negative.
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The SI unit of force is the.
A.) joule. B.) kilogram. C.) meter. D.) newton. |
D.) newton.
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Which of the following relationship is correct?
A.) 1 N=1 kg B.) 1 N=1 Kg*m C.) 1 N=1 kg*m/s D.) 1 N=1 kg*m/s2 |
D.) 1 N=1 kg*m/s2
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What kind of friction occurs as a fish swims through water?
A.) fluid. B.) rolling. C.) sliding. D.) weight. |
A.) fluid.
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The property of matter that resists changes in motion is called.
A.) friction. B.) gravity. C.) inertia. D.) weight. |
C.) Inertia.
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If a force of 12 N is applied to an object with a mass of 2 kg, the object will accelerate at.
A.) 0.17 m/s2 B.) 24 m/s2 C.) 6 m/s2 D.) 12 m/s2 |
C.) 6 m/s2
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Your weight equals your.
A.) mass. B.) mass divided by the net force acting on you. C.) mass times the acceleration due to gravity. D.) mass times your speed. |
C.) mass times the acceleration due to gravity.
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Newton's third law of motion describes.
A.) action and reaction forces. B.) balanced forces. C.) centripetal forces. D.) net force. |
A.) action and reaction forces.
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The product of an objects's mass and velocity is its.
A.) centripetal force. B.) momentum. C.) net force. D.) weight. |
B.) momentum.
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What is conserved when two objects collide in a closed system?
A.) acceleration. B.) momentum. C.) Net force. D.) Velocity. |
B.) Momentum
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What force is responsible for the repulsion between two positively-charged particles?
A.) centripetal. B.) electric. C.) gravitational. D.) nuclear. |
B.) electric.
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When opposite poles of two magnets are brought together, the poles.
A.) attract each other. B.) repel each other. C.) cancel each other. D.) Cause a net force of zero. |
A.) attract each other.
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Which universal force acts only on the protons and neutrons in a nucleus?
A.) electric. B.) gravitational. C.) magnetic. D.) Strong nuclear. |
D.) Strong nuclear.
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With which of the following is the weak nuclear force associated?
A.) lightning B.) nuclear decay C.) ocean tides D.) static cling |
B.) nuclear decay.
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Which of the following universal forces is the weakest?
A.) electric B.) gravitational C.) magnetic D.) strong nuclear |
B.) gravitational
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The force that keeps an object moving in a circle is called.
A.) Centripetal force. B.) fluid friction. C.) Inertia. D.) Momentum. |
A.) Centripetal force.
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In order to calculate pressure exerted on a surface, what quantity is divided by the surface area?
A.) altitude. B.) force. C.) mass. D.) volume. |
B.) force.
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If the air inside a balloon exerts a force of 1.5 N on an area of 0.5 N on an area of 0.5 m2, what is the pressure inside the balloon?
A.) 0.5 N/m2 B.) 1.5 N/m2 C.) 2.5 N/m2 D.) 3 N/m2 |
D.) 3 N/m2
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What is the SI unit of pressure?
A.) g/cm3 B.) m/s2 C.) the newton D.) the pascal |
D.) the pascal.
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A pressure of 10 N/m2 equals?
A.) 7 Pa. B.) 70 Pa. C.) 700 Pa. D.) 7000 Pa. |
B.) 70 Pa.
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Which of the following materials is NOT a fluid?
A.) air. B.) cork. C.) gasoline. D.) water. |
B.) Cork
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The pressure of air at sea level is approximately?
A.) 0 kPa. B.) 10 kPa. C.) 101 kPa. D.) 1000 kPa. |
C.) 101 kPa.
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The operation of a hydraulilc life system is explained by.
A.) Archimedes' principle. B.) Bernoulli's principle. C.) Newton's principle. D.) Pascal's principle. |
D.) Pascal's principle.
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The hydraulic system of a dump truck is designed to multiply?
A.) distance. B.) force. C.) pressure. D.) speed. |
B.) Force.
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The upward force acting on the wing of an airplane in flight is called?
A.) drag. B.) lift. C.) thrust. D.) weight. |
B.) Lift
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The upward force acting on an object submerged in a fluid is called.
A.) buoyant force. B.) drag. C.) pressure. D.) weight. |
A.) buoyant force.
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The strength of the buoyant force acting on an object in a fluid depends on the object's.
A.) mass. B.) surface area. C.) volume. D.) weight. |
C.) volume
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The buoyant force on an object in a fluid is equal to the weight of the.
A.) fluid. B.) fluid surrounding the object. C.) fluid displaced by the object. D.) object. |
C.) fluid displaced by the object.
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The relationship between buoyant force and weight of a displaced fluid was first stated by.
A.) archimedes. B.) bernoulli. C.) newton. D.) pascal. |
A.) archimedes.
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Which of the following substances will float in corn syrup? (The density of corn syrup is 1.38 g/cm3.)
A.) copper (8.9 g/cm3) b.) silver (10.5 g/cm3) c.) iron (7.8 g/cm3) d.) glycerin (1.26 g/cm3) |
D.) glycerin (1.26 g/cm3)
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Which of the following substances will sink in glycerin? (The density of glycerin 1.26 g/cm3)
A.) water (1.00 g/cm3) B.) ethyl alcohol (0.81 g/cm3) C.) benzene (0.90 g/cm3) D.) aluminum (2.70 g/cm3) |
D.) aluminum (2.70 g/cm3)
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In which of the following is no work done?
A.) climbing stairs. B.) lifting a book. C.) pushing a shopping cart. D.) None of the above. |
D.) None of the above.
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What is the unit of work?
A.) joule B.) newton/meter C.) watt D.) all of the above |
A.) Joule
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If you exert a force of 10.0 N to lift a box a distance of 0.9m, how much work do you do?
A.) 0.1 J B.) 9.0 J C.) 10.9 J D.) 90.0 J |
B.) 9.0 J
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If you perform 40 joules of work lifting a 10-N box from the floor to a shelf, how high is the shelf?
A.) 0.3 m B.) 20 m C.) 4.0 m D.) 400 m |
C.) 4.0 m
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The SI unit of power is the.
A.) joule. B.) newton. C.) newton-meter. D.) watt. |
D.) watt.
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The power of a machine measures.
A.) its rate of doing work. B.) its strength. C.) the force it produces. D,) the work it does. |
A.) its rate of doing work.
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If you exert a force of 700 N to walk 6 m up a flight of stairs in 6 s, how much power do you use?
A.) 19 w. B.) 25,200 w. C.) 700 w. D.) 4200 w. |
C.) 700 w.
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A 750-W motor might also be rated as a.
A.) 0.5-horsepower motor. B.) 1-horsepower motor. C.) 2-horsepower motor. D.) 10-horsepower motor. |
B.) 1-horsepower motor.
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3720 watts equals about how many horsepower?
A.) 5. B.) 10. C.) 20. D.) 30. |
A.) 5.
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A machine is a device that can multiply.
A.) force. B.) power. C.) work. D.) wheel and axle. |
A.) force.
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If you know the input distance and output distance of a machine, which of the following can you calculate?
A.) work. B.) actual mechanical advantage. C.) efficiency. D.) ideal mechanical advantage. |
D.) ideal mechanical advantage.
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An ax is an example of a (an).
A.) inclined plane. B.) lever. C.) wedge. D.) wheel and axle. |
C.) wedge.
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Which of the following is an example of a wheel and axle?
A.) hammer. B.) an automobile steering wheel. C.) a jar lid. D.) a pencil. |
B.) an automobile steering wheel.
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An example of a compound machine is a.
A.) crowbar. B.) bicycle. C.) ramp. D.) seesaw. |
B.) bicycle.
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Work is a transfer of.
A.) energy. B.) force. C.) mass. D.) motion. |
A.) energy.
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What is transferrred by a force moving an object through a distance?
A.) force. B.) mass. C.) motion. D.) energy. |
D.) energy.
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The energy of motion is called.
A.) kinetic energy. B.) potential energy. C.) thermal energy. D.) work. |
A.) kinetic energy.
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A small 20-kilogram canoe is floating downriver at a speed of 2 m/s. What is the canoe's kinetic energy?
A.) 22 J. B.) 40 J. C.) 80 J. D.) 400 J. |
B.) 40 J.
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A 13-kg sled is moving at a speed of 3.0 m/s. At which of the following speeds will the sled have twice as much kinetic energy?
A.) 1.5 m/s B.) 4.2 m/s C.) 6 m/s D.) 9 m/s |
B.) 4.2 m/s
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An object's gravitational potential energy is NOT directly related to which of the following?
A.) its height relative to a reference level. B.) its mass. C.) its speed. D.) the acceleration due to gravity. |
C.) its speed.
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Which of the following increases when an object becomes warmer?
A.) chemical energy. B.) elastic potential energy. C.) nuclear energy. D.) thermal energy. |
D.) thermal energy.
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The energy stored in gasoline is.
A.) chemical energy. B.) electromagnetic energy. C.) mechanical energy. D.) nuclear energy. |
A.) chemical energy.
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The total potential and kinetic energy of all the microscope particles in an object make up its.
A.) chemical energy. B.) electric energy. C.) nuclear energy. D.) thermal energy. |
D.) thermal energy.
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Walking converts what type of energy into mechanical energy?
A.) chemical. B.) electromagnetic. C.) nuclear. D.) thermal. |
A.) chemical.
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Nuclear power plants are designed to convert nuclear energy into what type of energy?
A.) chemical. B.) electrical. C.) geothermal. D.) mechanical. |
B.) electrical.
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Solar cells convert what type of energy into electrical energy?
A.) chemical. B.) electromagnetic. C.) nuclear. D.) thermal. |
B.) electromagnetic.
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The equation E=mc2 relates energy and.
A.) force. B.) gravity. C.) mass. D.) work. |
C.) mass.
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Nonrenewable energy resources do not include which of the following?
A.) coal. B.) hydrogen fuel cells. C.) oil. D.) uranium. |
B.) hydrogen fuel cells.
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A benegit of a hydrogen fuel cell is that its by product is.
A.) carbon dioxide. B.) oxygen. C.) water. D.) uranium. |
C.) water.
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Which of the following types of transportation is NOT mass transportation?
A.) bus. B.) car. C.) streetcar. D.) train. |
B.) car.
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Which of the following is a unit of temperature?
A.) Celsius degree. B.) joule. C.) kilogram. D.) calorie. |
A.) Celsius degree.
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From his observations of cannon drilling, Count Rumford concluded that heat could NOT be a form of.
A.) kinetic energy. B.) potential energy. C.) matter. D.) radiation. |
C.) matter.
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Heat is the transfer of thermal energy from one object to another because of a difference in.
A.) specific heat. B.) phase. C.) temperature. D.) waste heat. |
C.) temperature.
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What property of an object is related to the average kinetic energy of the particles in that object?
A.) specific heat. B.) mass. C.) conductivity. D.) temperature. |
D.) temperature.
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As the temperature of an object rises, so does the.
A.) kinetic energy of the object. B.) mass of the object. C.) thermal energy of the object. D.) potential energy of the object. |
C.) thermal energy of the object.
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Which of the following devices is based on the property of thermal expansion?
A.) balance. B.) calorimeter. C.) convection oven. D.) thermometer. |
D.) thermometer.
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Thermal energy depends on an object's
A.) mass. B.) phase (solid, liquid, or gas). C.) temperature. D.) all of the above. |
D.) all of the above.
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What does a calorimeter directly measure?
A.) change in temperature. B.) kinetic energy. C.) specific heat. D.) radiation. |
A.) change in temperature.
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Energy from the sun reaches Earth mostly by.
A.) conduction. B.) convection. C.) radiation. D.) thermal expansion. |
C.) radiation.
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Matter is needed to transfer thermal energy by.
A.) conduction. B.) convection. C.) radiation. D.) both a and b. |
D.) both a and b.
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Which of the following materials conducts hear well?
A.) glass. B.) plastic. C.) metal. D.) wood. |
C.) metal.
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To which of the following does the first law of thermodynamics apply?
A.) heating objects. B.) transferring thermal energy. C.) doing work on a system. D.) all of the above. |
D.) all of the above.
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According to the first law of thermodynamics, the amount of work done by a hear engine equals the amount of.
A.) work done on the engine. B.) waste heat it produces. C.) thermal energy added to the engine minus the waste heat. D.) thermal energy added to the engine plus the waste heat. |
C.) thermal energy added to the engine minus the waste heat.
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The second law of thermodynamics states that thermal energy can flow from colder objects to the hotter objects.
A.) by convection. B.) only if work is done on the system. C.) spontaneously. D.) when thermal expansion takes place. |
B.) only if work is done on the system.
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Disorder in the universe increases because.
A.) spontaneous changes produce more order in a system. B.) work produce disorder in a system. C.) work produces waste hear, which leaves a system. D.) all of the above. |
C.) work produces waste here, which leaves a system.
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One consequence of the third law of thermodynamics is that.
A.) heat engines have inefficiency less than 100 percent. B.) in some energy conversions, energy is not conserved. C.) engines cannot discharge waste heat. D.) the work a heat engine produces is less than the waste hear it produces. |
A.) heat engines have inefficiency less than 100 percent.
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Which of the following happens in a stream engine.
A.) fuel is burned outside the engine. B.) heat is converted into work. C.) hot stem pushes a piston. D.) all of the above. |
D.) all of the above.
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In most four-stroke internal combustion engines, when does the piston move downward?
A.) during the compression stroke only. B.) during the compression and exhaust strokes. C.) during the intake and exhaust strokes. D.) during the power and intake strokes. |
D.) during the power and intake strokes.
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Which central heating system involves a furnace and a blower?
A.) electric baseboard. B.) forced-air. C.) hot-water. D.) steam. |
B.) forced-air.
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A fluid that vaporizes and condenses inside the tubing of a hear pump is called the.
A.) compressor. B.) fuel. C.) refrigerant. D.) condenser. |
C.) refrigerant.
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