when a car traveling at a speed of 10 metres per second applies breaks and bring the car to rest in 20 seconds then the retardation will be?
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Explanation:
u=10m/sec
v=0
t=20 sec
retardation = v-u/t
= 0-10/20
= -10/20
= -1/2
Therefore,
retardation = -1/2 m/sec^2
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