PROBLEM The driver of a1.00x10*3)kg car traveling on the interstate at 65.0 m/s (nearly 80.0 mph) slams on his brakes to avoid hitting a second vehicle in front of him, which had come to rest because of congestion ahead (Fig. 2.7) After the brakes are applied, a constant kinetic friction force of magnitude8.00x10*3 N acts on the car. Ignore air resistance. (a) At what minimum distance should the brakes be applied to avoid a collision with the other vehicle? (b) If the distance between the vehicles is initially only 30.0 m, at what speed would the collision occur?

PROBLEM The driver of a1.00x103)kg car traveling on the interstate at 65.0 m/s (nearly 80.0 mph) slams on his brakes to avoid hitting a second vehicle in front of him, which had come to rest because of congestion ahead (Fig. 2.7) After the brakes are applied, a constant kinetic friction force of magnitude8.00x103 N acts on the car. Ignore air resistance. (a) At what minimum distance should the brakes be applied to avoid a collision with the other vehicle? (b) If the distance between the vehicles is initially only 30.0 m, at what speed would the collision occur?

Name: 1 EXAMPLE 2.2 Collision Analysis oeupd onnoGOAL Apply the work-energy
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Description: 1 EXAMPLE 2.2 Collision Analysis oeupd onnoGOAL Apply the work-energy theorem with a known force.PROBLEM The driver of a1.00x10*3)kg car traveling on the interstate at 65.0 m/s(nearly 80.0 mph) slams on his brakes to avoid hitting a second vehicle i

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 41PE: (a) How long would it takea 1.50105 -kg airplane with engines that produce 100 MW of power to reach...

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Concept explainers

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows:

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1 EXAMPLE 2.2 Collision Analysis oeupd onno
GOAL Apply the work-energy theorem with a known force.
PROBLEM The driver of a1.00x10*3)kg car traveling on the interstate at 65.0 m/s
(nearly 80.0 mph) slams on his brakes to avoid hitting a second vehicle in front of
him, which had come to rest because of congestion ahead (Fig. 2.7) After the
brakes are applied, a constant kinetic friction force of magnitude8.00x10*3 N acts
on the car. Ignore air resistance. (a) At what minimum distance should the brakes
be applied to avoid a collision with the other vehicle? (b) If the distance between
the vehicles is initially only 30.0 m, at what speed would the collision occur?

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