Question

A motor boat is travelling with a speed of 3.0 m/sec. If the force on it due to water flow is 500 N, the power of the boat is

• A. 150 kW
• B. 15 kW
• C. 1.5 kW
• D. 150 W

Answer 1

Answer: (C)

1.5 kW

Answer 2

P = Fv $= 500 \times 3 = 1500 \mathrm {~W} = 1.5 \mathrm {~kW}$