InterviewSolution
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InterviewSolution
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From a building two balls `A` and `B` are thrown such that `A` is thrown upwards and `B` downwards ( both vertically with the same speed ). If `v_(A) and v_(B)` are their respective velocities on reaching the ground , thenA. `v_(B) gt v_(B)`B. `v_(A) = v_(B)`C. `v_(A) gt v_(B)`D. their velocities depends on their masses |
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Answer» Correct Answer - B From conservaiton of enegry, potential enegry at height `h` `= K.E.` at ground Therefore, at hieght `h, P.E.` of ball `A` `P.E. = m_(A) gh` `V_(A) = sqrt(2gh)` Similarly, `V_(B) - sqrt(2gh)` Therefore, `V_(A) = V_(B)` |
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