Q.
A ball is thrown vertically upwards with a speed of 10 m/s and another ball is thrown vertically downwards with the same speed simultaneously. The time difference between them in reaching the ground )(in s) is: g=10m/s2
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a
12
b
6
c
2
d
1
answer is C.
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Detailed Solution
For both of them displacements are same. h=-ut1+12gt12 and h=ut2+12gt22 solving we get u=12gt1-t2
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