Multiple Choice
A 400-N block is dragged along a horizontal surface by an applied force as shown.The coefficient of kinetic friction is uk = 0.4 and the block moves at constant velocity.The magnitude of is:
A) 100 N
B) 150 N
C) 200 N
D) 290 N
E) 400 N
Correct Answer:

Verified
Correct Answer:
Verified
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