Sir there is a mistake in the problem of collision of two balls because the lower ball will not remain in air till 4 seconds!!!!!
9 years ago
by
Ankit Kumar
Ans
1
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Yes that's true!
9 years ago
by
Harsh Gupta
Ans
2
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That is why are reverting and adding it's velocity as your reference is the lower ball.
8 years ago
by
Sudarshana Ghosh
Ans
3
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So what.They can collide at ground also.check the time for B to coming to the ground...
7 years ago
by
Shah Darshan Jagdishbhai
Ans
4
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Sorry friends...i had made a mistake...B is not taking 4sec.
7 years ago
by
Shah Darshan Jagdishbhai