University Physics (14th Edition)
14th Edition
ISBN: 9780133969290
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem Q4.37DQ
In a head-on collision between a compact 1000-kg car and a large 2500-kg car, which one experiences the greater force? Explain. Which one experiences the greater acceleration? Explain why. Why are passengers in the small car more likely to be injured than those in the large car, even when the two car bodies are equally strong?
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The question below refers to a collision between a car and a truck. Choose one answer from the
possibilities A though J that best describes the forces between the car and the truck during a
collision as described below.
The car and the truck are both moving at the same speed when they collide. Which choice describes the
forces?
Assume that the truck is much heavier than the car.
O A
O
O
A. The truck exerts a greater amount of force on the car than the car exerts on the truck.
B. The car exerts a greater amount of force on the truck than the truck exerts on the car.
C. Neither exerts a force on the other; the car gets smashed simply because it is in the way of
the truck
D. The truck exerts a force on the car but the car doesn't exert a force on the truck.
E. The truck exerts the same amount of force on the car as the car exerts on the truck.
F. Not enough information is given to pick one of the answers above.
G. None of the answers above describes the situation correctly.
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A 64 kg baseball player jumps into the air throws a 151 g baseball directly eastward with a force of 8.4 N. What is the acceleration of the baseball?
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56 m/s2 to the east
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A large semi truck has a mass of 35,000 kg. It collides head on with a car that has a mass of 1000 kg. The car’s initial velocity is 10 m/s and the truck’s initial velocity is 5 m/s in the opposite direction. Which of the following can you say about the forces and velocities of the two vehicles?
a. The force that the truck makes on the car is equal to the force the car makes on the truck so the car’s velocity changes by the same amount that the truck’s velocity does.
b. The mass of the truck is so much larger than the car that the force of the truck on the car is much greater than the force the car puts on the truck and the car velocity after the collision is in the opposite direction.
c. The force that the truck makes on the car is much larger than the force the car makes on the truck so the car’s velocity changes much more than the truck’s does.
d. The force that the truck makes on the car is equal to the force the car makes on the truck but the mass of the truck is much…
Chapter 4 Solutions
University Physics (14th Edition)
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