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29 Cards in this Set
- Front
- Back
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Translational Motion
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-Describes the motion of an object that moves from one position to another w/o reference to a fixed point. -Includes the motion of an object in a straight line, and the curved, parabolic trajectory of a launched or thrown projectile. |
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Rotational Motion
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-Motion of an object that moves from one position to another w/ reference to a fixed point and axis. |
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Kinematics
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-The science of motion -Studies the motion of objects without reference to its causes. |
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Dimensions/Force
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-Physics 7 basic dimensions: length(1), mass(2), time(3), temperature(4), amount of a substance(5), electric current(6), luminous intensity(7). -Force, defined by newton's 2nd law of motion as the product of mass and acceleration {(M)(L/T^2) ML/T^2} |
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Acceleration
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-is defined as the change in velocity over the change in time. |
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Unit
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-which indicates the amount of a physical quantity. |
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SI system of units
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-Base unit of length is meter. -Base unit of mass is the kilogram. -Base unit of time is the second. |
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Conversion factors
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-convert units through ratios of equivalent quantities from one system of measure to another. |
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Determine the number of grams (g) in 5 kilograms (kg). |
5kg*1000g/1kg=5000g
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Determine the number of seconds in 1 year.
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1y*365d/1y*24hr/1d*60min/1hr*60s/1min {1*365/1*24/1*60/1*60/1}=3156000,3.15*10^7 |
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Calculate the number of heartbeats that occur in an individual over a lifetime. 1.1beats/1s 80yrs=average life expectancy |
1.1*60*60*365*80=2775168000, 2.78*10^9
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Vector Quantities
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-Quantities that require both a magnitude and direction -(ex., Displacement, Velocity, Acceleration, Force, Momentum, Torque.) |
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Scalar Quantities
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-Quantities that only require magnitude -(ex., Measurement[time, mass, area, volume], Kinematics[distance, speed], Dynamics[work, energy].) |
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Mass |
-The quantity of matter in a body regardless of its volume or of any forces acting on it. |
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Weight
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which is the measure of the force of gravity acting on a body. |
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Time |
-The indefinite continued progress of existence and events in the past, present, and future regarded as a whole. |
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Area |
-Number of square length units it takes to cover a surface. |
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Volume
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Quantity of three-dimensional space enclosed by a closed surface. |
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Distance
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-Is a scalar quantity that refers to "how much ground an object has covered" during its motion.
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Speed
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The rate at which an object covers distance.
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Dynamics
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-A branch of applied mathematics concerned with the study of forces and torques and their effect on motion |
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Work
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-Measure of energy transfer that occurs when an object is moved over a distance by an external force. |
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Energy
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-Its a scalar quantity, abstract and cannot always be perceived, given meaning through calculation, All forms of energy are either kinetic or potential. The energy associated with motion is called kinetic energy. The energy associated with position is called potential energy |
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Displacement
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vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position. |
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Velocity
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-The rate at which an object changes its position.
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Force
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-Something that causes a change in the motion of an object. -An object's mass multiplied by its acceleration. |
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Momentum |
- Refers to the quantity of motion that an object has "Mass in motion"(p=m*v). |
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Torque
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-A measure of how much a force acting on an object causes that object to rotate. Torque=Vector(r)*Force(f)=r*f*sin(0) = r x F = r F sin().
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