Question

Answer in short for the following questions.

1. A bus decreases its speed from 80 km h-1 to 60 km h-1 in 5 s. Find the acceleration of the bus.

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Answer 1

Answer:

Initial speed u=80 km/h=80×

18

5

=22.22 m/s

Final speed v=60 km/h=60×

18

5

=16.67 m/s

Using v=u+at

Or 16.67=22.22+α×5

⟹ a=−1.1 m/s

2

Hope it helps