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Author Question: A rock dropped from a 5-m height accelerates at 10 m/s2 and strikes the ground 1 s later. If the ... (Read 440 times)

mynx

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on: Jul 29, 2018
A rock dropped from a 5-m height accelerates at 10 m/s2 and strikes the ground 1 s later. If the rock is dropped from a height of 2.5 m, its acceleration of fall is
 
  A) half.
  B) the same.
  C) twice.
  D) four times as much.

Question 2

A ball starting from rest at the top of an inclined plane accelerates at 2 m/s2 and reaches the bottom of the plane in 3 seconds. What is the length of the plane?
 
  A) 2 m
  B) 3 m
  C) 5 m
  D) 9 m


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jackie

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Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: D


mynx

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Reply #2 on: Jul 29, 2018
Thanks


jackie

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Reply #3 on: Jul 29, 2018
Welcome :)


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