A car with a mass of 1290 kilograms is being driven at 17.9 meters per second when it runs into a tree. a. What is the change in kinetic energy of the car? Include units in your answer b. What work is done in pushing in the front of the car? Include units in your answer c. If the front of the car is pushed in 44.4 centimeters, what is the magnitude of the force exerted on the car? Include units in your answer.
A car with a mass of 1290 kilograms is being driven at 17.9 meters per second when it runs into a tree. a. What is the change in kinetic energy of the car? Include units in your answer b. What work is done in pushing in the front of the car? Include units in your answer c. If the front of the car is pushed in 44.4 centimeters, what is the magnitude of the force exerted on the car? Include units in your answer.
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter8: Potential Energy And Conservation Of Energy
Section: Chapter Questions
Problem 23P: A cat’s crinkle ball toy of mass 15 g is thrown straight up with an initial speed of 3 m/s. Assume...
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A car with a mass of 1290 kilograms is being driven at 17.9 meters per second when it runs into a tree.
a. What is the change in kinetic energy of the car? Include units in your answer
b. What work is done in pushing in the front of the car? Include units in your answer
c. If the front of the car is pushed in 44.4 centimeters, what is the magnitude of the force exerted on the car? Include units in your answer.
Transcribed Image Text:A car with a mass of 1290 kilograms is being driven at 17.9 meters per second when it runs into a tree.
a. What is the change in kinetic energy of the car? Include units in your answer. More information.
4.0
b. What work is done in pushing in the front of the car? Include units in your answer. More information.
4.0
c. If the front of the car is pushed in 44.4 centimeters, what is the magnitude of the force exerted on the car? Include units in your answer. More information.
4.0
Notice that the farther the front of the car is pushed in, the smaller the force, and therefore the smaller the acceleration experienced by the passengers inside. So for crashes, to some extent, it is
advantageous to have a flimsy car!
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