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Apologia Physics M2

One dimensional motion equations and free fall

QuestionAnswer
free fall: the motion of an object when it is falling solely under the influence of gravity; prevalent form of one-dimensional motion
v= v0 * + at *this 0 should be a subscript 0
the area under a velocity-versus-time curve is equal to the displacement caused by the motion
The equations from module 2 are valid only when the acceleration is constant.
When free fall occurs, the motion is occurring in a straight line and the acceleration of the body falling is constant.
Objects falling near the surface of the earth experience a constant acceleration of 9.8 m/sec2* (32 ft/secd2*) straight down *this 2 should be superscript
When an object (such as tennis ball) is in free fall, the acceleration is constant, so the object travels farther during each successive time interval.
When a physicist says "near the surface of the earth," he/she typically means the object cannot be more than a few kilometers above the ground.
Created by: MrsHough
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