a bus is moving with a velocity of 72 km/hr. On seeing a boy on the road 65m ahead, the driver jammed on the brake and the bus stopped with uniform retardation 5m/s square. Calculate the distance travelled by the bus.
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Answer:
v = 72 km/hr = 72 × 518 = 20 m/s Time taken to cover the distance of 5m is: t = 520 = 0.25sec This time is called Reaction time. M
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