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Question 2
A bus decreases its speed from 80 km h1 to 60 km h1 in 5 s. Find the acceleration of the bus.

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Solution

Initial speed of the bus, u=80 km/h=80×518 m/s=22.22 m/s
Final speed of the bus, v=60km/h=60×518 m/s=16.66 m/s
Time taken to decrease the speed, t = 5 s
Acceleration, a=vut=16.6622.225=1.112 m/s2

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