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Two stones of equal masses are dropped f...

Two stones of equal masses are dropped from a rooftop of height h one after another. Their separation distance against time will

A

Remain the same

B

Increase

C

Decrease

D

Be zero

Text Solution

Verified by Experts

The correct Answer is:
B
1st stone `h_1 = 1/2 g t^2`
2nd stone `h_2 = = 1/2 g(t - t_0)^2`
Delta h = h_1 - h_2 = 1/2 g [ t^2 - t^2 - t_0^2 + 2t t_0]`
Delta h = 1/2 g t_0 (2t -t_0) , Delta h` is increasing with time.
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