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.
Answer: B
Physics & Space Science
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It takes 10. J of energy to move 2.0 C of charge from point A to point B. What is the potential difference between points A and B?
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Physics & Space Science