A 5 kg box is pushed across a surface with a force of 10 N. If the box moves at a constant speed, what is the frictional force acting on it?
Options
A
0 N
B
5 N
C
10 N
D
15 N
Answer & Analysis
Answer
C
Analysis
To determine the frictional force acting on
the box, we need to analyze the situation given that the box is moving at a
constant speed.
Since the box is moving at a constant
speed, we can conclude that the frictional force () must be equal to the
applied force () in magnitude but opposite in direction to keep
the net force at zero: equation gives us:
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