A 3.0-kg block is dragged over a rough horizontal surface by a constant force of 16 N
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Question:
A 3.0-kg block is dragged over a rough horizontal surface by a constant force of 16 N acting at an angle of 37° above the horizontal as shown. The speed of the block increases from 4.0 m/s to 6.0 m/s in a displacement of 5.0 m. What work was done by the friction force during this displacement?
a. | -34 J |
b. | -64 J |
c. | -30 J |
d. | -94 J |
e. | +64 J |
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