Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 2 - Describing Motion: Kinematics in One Dimension - Problems: 16

Answer

a. 0.065 h, 6.2 km. b. 0.00765 h, 0.73 km.

Work Step by Step

a. Write the distance that the car travels. d = (95 km/h)(t) Alternatively, the car must travel the length of the train plus the distance that the train travels. d = (train length) + (75 km/h)(t) Set the two expressions equal, and solve for the time of 0.065 hours. Plug that time back into either distance expression above to find the car’s travel distance. b. Now the car travels the length of the train MINUS the distance that the train travels. The second expression above now becomes d = (train length) - (75 km/h)(t). Once again, equate the two expressions for the distance the car travels, and solve for the time. Plug that time back into either distance expression to find the car’s travel distance in this second case.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.