InterviewSolution
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InterviewSolution
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A body travelling with uniform acceleration crosses two point `A` and `B` with velocities `20 m s^-1` and `30 m s^-1` respectively. The speed of the body at the mid-point of `A` and `B` is.A. `25 ms^(-1)`B. `25.5 ms^(-1)`C. `24 ms^(-1)`D. `10sqrt(6)ms^(-1)` |
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Answer» Correct Answer - B `(30)^(2)=(20)^(2)+2a(2s)` or `2as = 250` Now, `upsilon^(2)=(u)^(2)+2as=upsilon^(2)=(20)^(2)+250` `rArr upsilon^(2)=650` `therefore upsilon=25.5 ms^(-1)` |
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