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8.The motion of a particle along a straight line is describedby equation : x = 8 + 12 - 1where x is in metre and t in second. The retardation ofthe particle when its velocity becomes zero, is(a) 24 ms 2 (b) Zero (c) 6 m 2 (d) 12 m s- |
| Answer» <p>v=dx/dt=12-3t^2a=dv/dt=-6thence when velocity becomes zeroc)6m/s^2</p> <p>The correct answer is 12m/s^2</p> | |