2007_Fall_P112_Lab_03_Prelab

# 2007_Fall_P112_Lab_03_Prelab - Lab Section: _ Name: _ Lab...

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Lab Section: ______ Name: ______________________________ Lab Instructor: ______________________________ Lab Unit # 3 Pre-lab Questions: Dynamics of 1-D Motion 1. A rock is dropped from rest in a vacuum. The only force acting on the rock is its weight. (a) What is the rock’s acceleration (magnitude and direction) while falling ( )? = a r ____________________. Please draw and label the relevant free-body diagram for this situation: Suppose instead the rock were tossed upwards in a vacuum, i.e., given an initial upward velocity. (b) After the rock is released, what is its acceleration (magnitude and direction) while it is rising ( )? = a r ____________________. (c) What is the rock’s acceleration (magnitude and direction) at the instant it comes to rest momentarily at the top of its motion? = a r ____________________. 2. A ball is dropped from rest in air. In addition to its weight, the ball experiences a constant upward force due to the air equal in magnitude to 5 1 of the ball’s weight. (a)

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## This document was uploaded on 02/03/2008.

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2007_Fall_P112_Lab_03_Prelab - Lab Section: _ Name: _ Lab...

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