A box of mass 2.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at a steady speed of 8.0 m/s for 15 m. Use g = 10 m/s². Match the answers with questions. m v the work done on the box by its weight (WW) ◆ the work done on the box by the tension force in the cable (WT) the net work done on the box (Wnet) ◆ the final kinetic energy of the box (Kf) A. 300 J B.0 J C. -240 J D.-300 J E. -64 J F. 240 J G. 64 J

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Chapter7: Work And Kinetic Energy
Section: Chapter Questions
Problem 92AP: A horizontal force of 20 N is required to keep a 5.0 kg box traveling at a constant speed up a...
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A box of mass 2.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at a steady speed of 8.0 m/s for 15 m. Use g = 10 m/s2. Match the answers with
questions.
m
v
◆ the work done on the box by its weight (WW)
the work done on the box by the tension force in the cable (WT)
the net work done on the box (Wnet)
the final kinetic energy of the box (Kf)
A. 300 J
B. O J
C. -240 J
D.-300 J
E. -64 J
F. 240 J
G. 64 J
Transcribed Image Text:A box of mass 2.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at a steady speed of 8.0 m/s for 15 m. Use g = 10 m/s2. Match the answers with questions. m v ◆ the work done on the box by its weight (WW) the work done on the box by the tension force in the cable (WT) the net work done on the box (Wnet) the final kinetic energy of the box (Kf) A. 300 J B. O J C. -240 J D.-300 J E. -64 J F. 240 J G. 64 J
You push a 46-kg file cabinet to the right on a frictionless horizontal surface with a force of 202 N from rest, the cabinet moves a distance of 6.9 m. What is the final speed of the
cabinet, in m/s?
Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in
your answer, it is already given in the question statement.
Transcribed Image Text:You push a 46-kg file cabinet to the right on a frictionless horizontal surface with a force of 202 N from rest, the cabinet moves a distance of 6.9 m. What is the final speed of the cabinet, in m/s? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
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