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Author Question: A baseball is released at rest from the top of the Washington Monument. It hits the ground after ... (Read 32 times)

saraeharris

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on: Jul 28, 2018
A baseball is released at rest from the top of the Washington Monument. It hits the ground after falling for 5.0 s. What was the height from which the ball was dropped? (g = 9.8 m/s2 and assume air resistance is negligible)
 a. 1.5  102 m
  c. 1.2  102 m
  b. 1.8  102 m
  d. 2.1  102 m

Question 2

A baseball catcher throws a ball vertically upward and catches it in the same spot when it returns to his mitt. At what point in the ball's path does it experience zero velocity and non-zero acceleration at the same time?
 a. midway on the way up
  b. at the top of its trajectory
  c. the instant it leaves the catcher's hand
  d. the instant before it arrives in the catcher's mitt


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meow1234

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Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


saraeharris

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Reply #2 on: Jul 28, 2018
Thank you!


meow1234

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Reply #3 on: Jul 28, 2018
Always glad to help...


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