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Grade: 11
        
A car moving at 40 km/h is to be stopped applying brakes in the next 4.0 m. If the car weighs 2000 kg what average force must be applied on it?
one year ago

Answers : (1)

Mustafa Ahmed
27 Points
							30864.2 N is correct?If yes then see how:Use newtons 2nd eqn of motionV^2 = u^2 - 2as(U = 40kph = 11.11 mps)Since v=0 hence a=-15.432mpssNow, average force = mass × acceln= 20000 × 15.432 = 30864.2
						
one year ago
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