Power output equals thrust force times velocity

Steps:

• Identify the thrust force from the engine as the driving force: 1200 N.
• Note the car's velocity: 24 m/s.
• Calculate power as P = thrust force × velocity = 1200 N × 24 m/s = 28,800 W = 28.8 kW.
• The resistive force affects acceleration but not the engine's output power calculation.

Why C is correct:

• 90 kW is the value obtained from P = F_thrust × v using the given data and standard formula for engine power.

Why the others are wrong:

• A uses resistive force × velocity × 10, ignoring thrust.
• B approximates weight × velocity / 52, unrelated to engine output.
• D uses weight × velocity, confusing gravitational with thrust force.

Final answer: Not enough information.