A car is running with a velocity of 72 km/hr. If it is brought to rest suddenly by applying brakes by seeing a child 30 metre ahead on the road and bus stops at a distance of 20 metres, calculate
1} retardation of the car
2} time taken by the car to come to rest
plz explain it
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সময় লেগেছিল প্রায় ৩মিনিট২০সেকেণ্ড
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