H2P-473
Efficiency
H2 Physics · JC 2 · Hard · Efficiency
A 2.0 kg object starts from rest and is pulled along a smooth horizontal surface by a constant horizontal force of 6.0 N. How does the power delivered by the force vary with time?
- P is constant with time
- P increases linearly with time from zero
- P increases but with decreasing gradient
- P decreases linearly with time
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.