Question #6417390Single Choice
Physics
Question
A box with a weight of 200 N is resting on a horizontal floor. A horizontal force of at least 45 N is required to start moving the box from rest. Once the box is in motion, a horizontal force of 40 N is sufficient to keep it moving at a constant speed. What is the kinetic frictional force acting on the box once it is in motion?
Options
A
45 N
B
40 N
C
200 N
D
35 N
Answer & Analysis
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