A particle, P moves along a straight line such that its displacement, s metres, from a fixed point O is given by s = 3t

Science & Mathematics by Anonymous 2018-06-28 13:33:43

Social Science

A particle, P moves along a straight line such that its displacement, s metres, from a fixed point O is given by s = 3t - t²/4, ...?

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where t is the time in seconds after passing O. Find the distance travelled in the fourth second. Do I have to substitute t =4? The answer is 1.25m