A 10-kg rock and a 20-kg rock are dropped at the same time and experience no significant air resistance.If the 10-kg rock falls with acceleration a,what is the acceleration of the 20-kg rock?
A)4a
B)2a
C)a
D)a/2
E)a/4

Question

Quizplus · Accepted Answer

The acceleration of a falling object due to gravity is constant and independent of the mass of the object. Therefore, both rocks will experience the same acceleration, which is denoted by "a". Therefore, the correct answer is (C) a.

A 10-Kg Rock and a 20-Kg Rock Are Dropped at the Same