A bus decreases it's speed from 72 km/ hour to 54km/ hour in 10 sec. Calculate the acceleration of the bus.
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Initial velocity of bus=72 km/hr=72×5/18=20m/s
Final velocity of bus= 54km/hr=54×5/18=15m/s
Time taken = 10 secs
Acceleration = v-u/t
So, acceleration = 15-20/10
= -5/10
= -0.5m/sec square
Final velocity of bus= 54km/hr=54×5/18=15m/s
Time taken = 10 secs
Acceleration = v-u/t
So, acceleration = 15-20/10
= -5/10
= -0.5m/sec square
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