A motorboat moves at a steady speed of6ms-1 .Water resistance acting on it is 500N . Calculate the power of the engine.
Step 1: Data provided,
Force(F)=500NSpeed(v)=6ms-1
Step 2: Formula used,
Power(P)=Force(F)×velocity(v)
Step 3: Calculation,
Power(P)=Force(F)×velocity(v)P=500N×6ms-1=3000W
Hence, the required power of the engine is 3000W
A car of mass 1250 kg experience a resistance of 750 N when it moves at 30ms−1. If the engine can develop 30kW at this speed, the maximum acceleration that the engine can produce is