Asked by Anonymous

A particle moving in a straight line with uniform deceleration has a velocity of 40m/s at a point, P, 20m/s at a point, Q and comes to rest at a point, R. Where QR=50m. Calculate the
Distance, PQ
Time taken to cover PQ
Time taken to cover PR
Answered by bobpursley
well if it is uniform (constant) deceleration, then PQ=QR=50m
average velocty PQ=30m/s, timePQ=50/30 sec
average velocity QR=10m/s, time QR=50/10 sec
total timePR=timePq+timeQR
Answered by Chinedu
I do not understand
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