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The distance travelled by a particle in time t is a by s= (2-5 m/s 3)t. Find (a) the average speed of particle during

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The distance travelled by a particle in time t is a by s= (2-5 m/s 3)t. Find (a) the average speed of particle during the time 0 to 5:0 s, and (b) instantaneous speed at t = 50 s.

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