Answer:0.667 N
Explanation:
Given
It is noticed that Frictional Force is 0.2 N
Coefficient of kinetic Friction 
We know Friction Force is given by

therefore




Which of the following is NOT a factor in efficiency?<span><span>A.metabolism</span><span>B.type of movement</span><span>C.muscle efficiency</span><span>D.digestion</span></span>
Answer:
10.0
Explanation:
Mechanical Advantage = distance moves along the plane/distance moved along the vertical
distance moves along the vertical = 0.3m
distance moves along the plane = 3.0m
Mechanical Advantage = 3.0/0.3
Mechanical Advantage = 10
Hence the mechanical advantage is 10.0
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Motion is the correct word that fits in.
Hope this helps.