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A 100-g toy car is propelled by a compressed spring that

Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli ISBN: 9780130606204 3

Solution for problem 20PE Chapter 7

Physics: Principles with Applications | 6th Edition

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Physics: Principles with Applications | 6th Edition | ISBN: 9780130606204 | Authors: Douglas C. Giancoli

Physics: Principles with Applications | 6th Edition

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Problem 20PE

A 100-g toy car is propelled by a compressed spring that starts it moving. The car follows the curved track in Figure 7.39. Show that the final speed of the toy car is 0.687 m/s if its initial speed is 2.00 m/s and it coasts up the frictionless slope, gaining 0.180 m in altitude.

Step-by-Step Solution:

Step-by-step solution Step 1 of 1 The potential energy gained by the toy car at the height is, The change in the kinetic energy of the toy car is According to the work energy theorem Or Therefore, Or Substitute for , for , and for in the above equation. Hence, the final speed of the car is .

Step 2 of 1

Chapter 7, Problem 20PE is Solved
Textbook: Physics: Principles with Applications
Edition: 6
Author: Douglas C. Giancoli
ISBN: 9780130606204

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A 100-g toy car is propelled by a compressed spring that