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106 Cards in this Set
- Front
- Back
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The slope of a position vs. time graph is the?
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velocity
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The slope of a velocity vs time graph is the?
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acceleration
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Horizontal lines on a d vs t graph indicates?
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Zero Velocity
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Horizontal lines on a v vs t graph indicates?
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Zero Acceleration
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Curved lines on a d vs t graph indicates?
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Changing acceleration
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What does the area under the line represent?
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Displacement
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The slope of a d vs t graph represents?
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velocity
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Is the point 0,0 a point on your d vs t graph?
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No, because the cart has not moved any distance yet
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Is the point 0,0 a point on your v vs t graph?
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No, because at time zero it had velocity
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The slope of a v vs. t graph represents?
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acceleration
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The area under a v vs. t graph represents?
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distance
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Represents a speed?
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8 m/hr
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An object which is slowing down is said to have ___ acceleration?
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negative
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A force is simply a ___ or ___?
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push or pull
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What is the difference between applied force and net force?
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Applied force is one force and net force is what is left over.
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What happens to the motion of an object when the net force is absent?
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Constant Velocity
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What is another name for the First Law of Motion?
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Inertia
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resistance to change in motion?
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inertia
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The measure of inertia for an object depends on ___?
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mass
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The Second Law of Motion explains what happens when there is a ___ force?
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net
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When a net force is greater than 0.0 N, the object will experience?
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acceleration
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The amount of acceleration is a ratio of the ___ divided by ___?
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force divided by mass
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What are the units of force?
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newtons
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In Newton's Second Law the force is always the ___ force acting on an object, not just any single force?
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net
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What is the affect of mass on the amount of acceleration an object experiences?
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Inverse; mass goes up, acceleration goes down
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Can we feel acceleration?
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Yes
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What is the relationship between mass and weight?
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Gravity (9.8 m/s2)
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Describes that forces always come in ___?
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pairs
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How is it often misquoted: "for every ___ there is an ___ and ___ reaction." What's the problem with this statement?
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It should be force instead of action
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The better way to state the 3rd Law is to say: "Whenever object A exerts a force on object B, object B will ___ an ___ and ___ force on object A?
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exert an equal and opposite
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directly proportional to the unbalanced force and inversely proportional to the mass?
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acceleration
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SI unit of force?
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Newtons
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SI unit of mass?
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Kg
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A Newton is equivalent to?
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kg m/s2
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Kg m/s2 is a valid unit for?
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Weight
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The force of gravity acting on an object is called its?
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Weight
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The same force is applied to the same object on Earth and on the Moon. The acceleration is?
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the same in both places
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y=kx2
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Power/Exponential
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y=kx
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Direct
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y=1/x
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Inverse
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Indicates y is directly proportional to x?
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Direct
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Indicates y is inversely proportional to x?
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Inverse
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Indicates y is proportional to the square of x?
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Power/Exponential
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Reading between data points is called?
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Interpolate
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Reading beyond the data points is called?
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Extrapolate
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Developed the International System of Units in France in the late 1600s?
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Gabriel Mouton
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tera
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10^12
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giga
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10^9
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mega
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10^6
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kilo
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10^3
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hecto
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10^2
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deka
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10^1
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deci
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10^-1
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centi
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10^-2
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milli
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10^-3
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micro
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10^-6
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nano
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10^-9
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pico
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10^-12
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change in position (vector)?
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displacement
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how far an object has traveled (scalar)?
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distance
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rate of the change in position (vector)?
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velocity
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rate of distance covered (scalar)?
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speed
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the rate at which velocity changes (vector)?
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acceleration
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the rate at which speed changes (scalar)?
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acceleration
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acceleration of gravity?
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-9.8 m/s2
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study of surfaces and boundaries?
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topology
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Slope is ___?
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velocity
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something that has size and direction?
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vector
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Law that inertia is resistance to motion?
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Newton's First Law of Motion
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Law that net external forces cause acceleration?
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Newton's Second Law of Motion
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Law that friction is the force opposing motion?
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Newton's Third Law of Motion
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An inclined plane?
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tilted surface
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all forces on an object are balanced?
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equilibrium
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Equilibrium doesn't mean that forces are ___?
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equal
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In equilibrium, object has Fnet of ___ and acceleration of ___?
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zero and acceleration of zero m/s2
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In equilibrium, object has constant ___?
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acceleration
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means at rest?
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static
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three forces acting on an object at rest?
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static equilibrium
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The sum of two vectors, or the ___, is found by drawing a third vector from the tail of the first to the tip of the second.
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resultant
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If a car travels 30 km during the first half hour of a trip and then travels 50 km during the next half hour of a trip, the average speed for the hour is ___.
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80 km/h
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An object is thrown straight up at 10 m/s. At the top of its rise, the object's acceleration is ___?
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-9.8 m/s2
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___ is the object's change in velocity divided by the time necessary to make that change.
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Acceleration
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The slope of a position-time graph yields the ___ of the moving object.
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velocity
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As the velocity of an object increases, the slope of the line on the position-time graph ___.
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increases
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When the slope of the line on a distance-time graph is ___ the object involved is at rest.
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zero
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With constant acceleration, the curve of a ___ vs. time graph is a half parabola.
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distance
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The slope of the line on a velocity-time graph shows the ___ of a moving object.
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acceleration
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The area between the graph line and the horizontal axis on a ___ vs. time graph represents the velocity by an object in a given time interval.
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acceleration
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A negative acceleration could mean that an object is ___.
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speeding up while going in the opposite direction
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___ is the property of an object that causes it to resist change in motion.
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Inertia
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An object is ___ when a net force acts on it.
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accelerated
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___ is a measure of the gravitational force acting on an object.
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weight
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___ does not change with the elevation or location of the object.
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mass
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The force of friction depends on the type of surfaces in contact and the ___ force.
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normal
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Static friction is ___ ___ kinetic force.
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greater than
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An elevator travels up a building. As it slows down, you apparent weight ___.
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decreases
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The standard metric unit of mass is the ___.
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kilogram
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The mass of a 5 kg object on earth is ___ ___ the mass of the object on the moon.
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equal to
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The acceleration of an object is?
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Directly proportional to the unbalanced force and inversely proportional to the mass
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Ignoring wind resistance and friction, the ___ velocity of a projectile is constant.
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horizontal
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The time required for a projectile to strike the ground depends on the original height, the initial ___ velocity and the acceleration due to gravity.
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vertical
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Two golf balls are released at the same time from the same height. One ball is dropped vertically while the other is projected horizontally. The ___ of the two balls is always the same.
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vertical velocity
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In a vacuum, the initial horizontal velocity of a projectile is ___ its final horizontal velocity.
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equal to
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Which force vector represents the weight of the crate?
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Straight down
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Which force vector is used to calculate friction?
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Left
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If the incline becomes steeper, which force vector will increase?
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Right
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