. Calculate the force needed to bring a 940-kg car to rest from a speed of 77 km/h in a distance of 120 m (a fairly typical distance for a non-panic stop). F = N . Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force exerted on the car. F = N

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Q: Help me solve it step by step, thank you in advance .

A: 5.444mA   Detailed solution given below. In case of Doubts please do let me know Explanation:

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Q: THIS IS INCORRECT!!!! PLS STOP GIVING ME INCORRECT SOLUTIONS!!!!

A: As before, The force on the wire is given by F=iLB⇒ma=iLB⇒a=iLBm⇒v=at=iLBtm

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.