A 950-kg pickup slows to rest from a speed of 92.5 km/h in a distance of 140 m. Assume the pickup is initially traveling in the positive direction. a. If the brakes are applied consistently and are the only thing making the pickup come to a stop, calculate the force (in newtons, in a component along the direction of motion of the pickup) that the brakes apply on the pickup. b. Suppose instead of braking that the pickup hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force, in newtons, exerted on the pickup in this case. c. What is the ratio of the force on the pickup from the concrete to the braking force

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter4: Newton's Laws Of Motion
Section: Chapter Questions
Problem 21P: A car of mass 875 kg is traveling 30.0 m/s when the driver applies the brakes, which lock the...
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A 950-kg pickup slows to rest from a speed of 92.5 km/h in a distance of 140 m. Assume the pickup is initially traveling in the positive direction.

a. If the brakes are applied consistently and are the only thing making the pickup come to a stop, calculate the force (in newtons, in a component along the direction of motion of the pickup) that the brakes apply on the pickup.

b. Suppose instead of braking that the pickup hits a concrete abutment at full speed and is brought to a stop in 2.00 m. Calculate the force, in newtons, exerted on the pickup in this case.

c. What is the ratio of the force on the pickup from the concrete to the braking force?

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