Worksheet
Advanced Properties of Freely Falling Bodies #2
Refer to the following information for the next 23 questions.
A 24.5 N ball is thrown straight upward from the top rail of a 4th story balcony (13.5 m) at a speed of 4.9 m/sec.
1. What is the gravitational field strength on the surface of the earth?
2. What is mass of the ball?
3. With respect to the ground at the base of the balcony, how much potential energy did the ball possess prior to being released?
4. How much momentum did the ball have immediately upon release?
5. What impulse did the person releasing the ball deliver to the ball when it was being released if the ball was originally at rest in his hand?
6. How much KE did the ball have immediately upon release?
7. Complete a FBD of the ball once it has been released and is in a state of freefall.
8. What acceleration will the ball be experiencing throughout its entire trajectory?
9. How fast will the ball be moving vertically when it reaches the apex of its trajectory?
10. What is the ball’s momentum as it passes through the apex?
11. What is the ball’s KE as it passes through the apex?
12. How high is the apex above the ball’s initial release position?
13. How much total potential energy does the ball have with respect to the ground when it reaches the apex?
14. How much work did gravity do
on the ball
between the time the ball was released and the time it reached the apex?
15. How much time was required for the ball to reach the apex?
16. What was the ball’s velocity just as it struck the ground at the base of the balcony?
16. What was the ball’s momentum just before impact?
17. What was the ball’s KE just before impact?
18. How much total time was required for the entire trip from release to impact?
19. How much work did gravity do
on the ball
as the ball fell from the apex to the ground?
20. How much did the KE of the ball increase between its release and its impact with the ground?
21. How much total work did gravity do
on the ball
between the ball's release and its impact with the ground?
22. For each of the positions designated, label the projectile's instantaneous height, instantaneous vertical velocity, and instantaneous time.
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