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A 10-Kg Rock and 20-Kg Rock Are Dropped from the Same

Question 47

Multiple Choice

A 10-kg rock and 20-kg rock are dropped from the same height and experience no significant air resistance.If it takes the 20-kg rock a time T to reach the ground,what time will it take the 10-kg rock to reach the ground?


A) 4T
B) 2T
C) T
D) T/2
E) T/4

Correct Answer:

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