Question

A car travelling at 36 km/h speeds
upto 72 km/h in 5 seconds. What is
its acceleration? If the same car stops
in 20 seconds, what is the
retardation?​

Answer 1

Answer:

Acceleration is ( 10/5 ) = 2 m/s^ 2. Since it is stated that the same car stops, it implies the car stops from a speed of 20 m/s in 20 seconds. Acceleration is -20/20 = -1m/s^2. Retardation is 1m/s^2.

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Answer 2

Answer:

Here is your answer...............