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Étiquette : RETARDING FORCE
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Calculation of average retarding force : to save a child on road
Question: The driver of a three-wheeler moving with a speed of 36 Kmh-1 sees a child standing in the middle of the road and brings his vehicle to rest in 4.0 s just in time to save the child.What is the average retarding force on the vehicle? The mass of the three-wheeler is 400 Kg…
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Calculating Stopping Time for a Body under Constant Retarding Force
Question: A constant retarding force of 50 N is applied to a body of mass 20 Kg moving initially with a speed of 15 ms-1 .How long does the body take to stop? Solution: Stopping time calculation: Calculating the acceleration: $${Acceleration =\frac{Force}{Mass}}$$ $${Acceleration =\frac {50 \ N}{20 \ Kg}}$$ $${Acceleration= 2.5 \ \frac{m}{s^2}}$$ Retardation: Retardation…