A bus moving with the velocity of 60km/hr has a weight 50 tonnes brought to rest in20s by applying brakes. Find its acceleration and the force required to stop.
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Explanation:
velocity of bus = 60km/hr
weight = 50 ton = 50×1000=50000 kg
acceleration = velocity/time
20 s = 20 ÷3600= 0.005 hr
= 60÷0.005
=12000 km/S2
force = m.a
=60×12000
=720000 N & kg.km/s`2
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