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Find the time when the displacement of the particle becomes zero. Assume velocity and position at `t = 0` to be and `- 10 m` respectively. A. `1s`B. `sqrt((5)/(3)) s`C. `5 s`D. `2 s` |
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Answer» Correct Answer - C `a = -3t + 5` `underset(0)overset(v)(int) dv = underset(0)overset(t)(int) (-3t + 5) dt` `v = (-3 t^(2))/(2) + 5t` `int dx = underset(0)overset(t)(int) (- (3t^(2))/(2) + 5t) dt` `Deltax = - (t^(3))/(2) + (5)/(2) t^(2)` `Deltax = 0` `rArr (t^(2))/(2) (5 - t) = 0` `t = 0s " & " t = 5s` |
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