Question 9
Work, Energy and PowerIf the force and the velocity on a system are each reduced simultaneously by half, the power of the system is
- A.doubled
- B.constant
- C.reduced to a quarter
- D.reduced by half.
Show the answer and explanation
Answer: C (reduced to a quarter)
Explanation
Power = force × velocity, so halving both gives ½ × ½ = ¼ of the original power.