Question

Find out the average speed and average velocity of a sprint that covers his 100 meter race in 1 minute and 4 seconds but does not come to rest and takes a turn by 360 degree to move for 10m in 16 seconds

Answer 1

(ii) For all the time intervals we need to calculate the initial velocity, acceleration, displacement and the final velocity

Formulas used:

s = ut + (1/2)at2 and v = u + at

by using the formula we get--

So, peak velocity attained by the is 19 m/s at the end of the 9th second.

(iii) Acceleration is highest between 5th to 9th second. It is 3 m/s2.

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