Question

A bus decreases its speed from 20 m/s to 10 m/s in 5 seconds.The acceleration of bus is:

Answer 1

Answer:

2 meters per second square

Explanation:

acceleration = (final velocity - initial velocity)/time

                  a = (v-u)/t

                     = (10 m/s-20 m/s)/5 s

                     = (-10 m/s)/5 s

                     = -2 m/s

Therefore the acceleration of the bus is -2 m/s. Since the acceleration is negative, this is case known as retardation.

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Answer 2

Explanation:

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