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A car of mass 2.0 x 103 kg is initially moving at 75 km/h when the...

A car of mass 2.0 x 103 kg is initially moving at 75 km/h when the brakes are applied and the car is brought to a stop in 25 m. Assuming the force that stops the car is constant, find the magnitude of that force that stop the car.

A. - 15.73x103 N

B. -17.3x103 N

C. 16.73x103 N

D. 12.73x103 N

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Answer #1

From the kinematics are know v2u²+zas where, o initial velocity = 75 km/h = 20.83 mis v is final velocity=0 s is distance 2 2

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