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Two identical masses are as shown in fig...

Two identical masses are as shown in figure. One is thrown upwards with velocity 20 m/s and another is just dropped simultaneously.
If the collision between them is elastic, find the time interval between their striking with ground

A

Zero

B

2 s

C

1 s

D

3 s

Text Solution

Verified by Experts

The correct Answer is:
B
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