Multiple Choice
A force
pushes a block along a horizontal surface against a force of friction
f. If the block undergoes a displacement s at constant velocity, the work done by the resultant force on the block
A) is equal to the work done by the force of friction
f
B) is given by W =
· 
C) increases the kinetic energy of the block.
D) increases the potential energy of the block.
E) is zero.
Correct Answer:

Verified
Correct Answer:
Verified
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