a car moving with velocity of 72kmh^1 is brought to rest in 10s. calculate the retardation.
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A =v-u/t
So 72kmperhour=72*5/18=20mpersec
Now a =20-0/10=200-0/10=20mpersec
So retardation =-20mpersec
So 72kmperhour=72*5/18=20mpersec
Now a =20-0/10=200-0/10=20mpersec
So retardation =-20mpersec
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