InterviewSolution
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InterviewSolution
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A body covers 20 m, 22 m, 24 m, in `8^(th)`, `9 ^(th)` and `10^(th)` seconds respectively. The body startsA. from rest and moves with uniform velocity.B. from rest and moves with uniform acceleration.C. with an initial velocity and moves with uniform acceleration.D. with an initial velocity and moves with uniform velocity. |
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Answer» Correct Answer - C As distance travelled in successive seconds differ by 2 m each, therefore acceleration is constant = `2 m s^(-2)` From `D_n` = u + a/2 (2n - 1) `therefore` `D_8 = u + 2/2 (2 xx 8 - 1)` 20 = u + 15 or u = `5 m s^(-1)` |
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