Which of these is an example of no work being done? a. a child pushes a toy car across a flat table b. a ball is dropped from a height of 1.00 m to the floor c. a car has the force of its brakes applied to the left while moving to the right d. a weightlifter holds 500 pounds above his head and does not move e. all of these
Which of these is an example of no work being done? a. a child pushes a toy car across a flat table b. a ball is dropped from a height of 1.00 m to the floor c. a car has the force of its brakes applied to the left while moving to the right d. a weightlifter holds 500 pounds above his head and does not move e. all of these
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter9: Energy In Nonisolated Systems
Section: Chapter Questions
Problem 6PQ
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Topic Video
Question
Which of these is an example of no work being done?
a. |
a child pushes a toy car across a flat table
|
|
b. |
a ball is dropped from a height of 1.00 m to the floor
|
|
c. |
a car has the force of its brakes applied to the left while moving to the right
|
|
d. |
a weightlifter holds 500 pounds above his head and does not move
|
|
e. |
all of these
|
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