Which of the following statements about projectile motion ARE correct? 1. The direction of both velocity and acceleration are changing across the motion trajectory 2. For a free fall object(the horizontal component of the initial velocity is zero), its velocity is zero when it reaches maximum height, but its acceleration is not zero at the same time. 3. The velocity direction is changing across the motion trajectory, but the acceleration direction remains the same. 4. For a free fall object(the horizontal component of the initial velocity is zero), both its velocity and acceleration are zero when it reaches maximum height.
Which of the following statements about projectile motion ARE correct? 1. The direction of both velocity and acceleration are changing across the motion trajectory 2. For a free fall object(the horizontal component of the initial velocity is zero), its velocity is zero when it reaches maximum height, but its acceleration is not zero at the same time. 3. The velocity direction is changing across the motion trajectory, but the acceleration direction remains the same. 4. For a free fall object(the horizontal component of the initial velocity is zero), both its velocity and acceleration are zero when it reaches maximum height.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter3: Motion In Two Dimensions
Section: Chapter Questions
Problem 4CQ: A ball is projected horizontally from the top of a building. One second later, another ball is...
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Which of the following statements about projectile motion ARE correct?
1. The direction of both velocity and acceleration are changing across the motion trajectory
2. For a free fall object(the horizontal component of the initial velocity is zero), its velocity is zero when it reaches maximum height, but its acceleration is not zero at the same time.
3. The velocity direction is changing across the motion trajectory, but the acceleration direction remains the same.
4. For a free fall object(the horizontal component of the initial velocity is zero), both its velocity and acceleration are zero when it reaches maximum height.
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