The power delivered by a force is P = Fv, where v is the velocity.
The force and velocity will be in the same direction, so the speed will increase.
F = P/v. Since P is constant v is increasing, F must get smaller. Correct answer is b).
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The power delivered by a force is P = Fv, where v is the velocity.
The force and velocity will be in the same direction, so the speed will increase.
F = P/v. Since P is constant v is increasing, F must get smaller. Correct answer is b).