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A ball of mass 100 gm is projected verti...

A ball of mass 100 gm is projected vertically upward from the ground with a velocity of `50 ms^(-1)`. At the same time another identical ball is dropped from aheight of 100 m to fall freely along the same path as that followed by the first ball. After some time the two balls collide, stick together and finally fall to the ground. The time taken by the combined mass to fall to the ground is approximately `(g = 10 ms^(-2))`

A

4.5 s

B

6.5 s

C

9 s

D

13 s

Text Solution

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The correct Answer is:
A
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