A motorbike engine can develop a power of 90000 W in order to keep a constant velocity of 30 m/s. What is the pushing force?
Correct answer: A. 3000 N
- A. 3000 N
- B. 30000 N
- C. 300000 N
- D. 300 N
Explanation
To find the pushing force exerted by the motorbike engine, we can use the equation: Power = Force × Velocity (P = W/T = Fd/T = Fv as d/T is equal to velocity)Given that Power = 90,000 W Velocity = 30 m/s Rearranging the equation, we have: Force = Power / Velocity Substituting the given values, we get: Force = 90,000 W / 30 m/s Force = 3,000 N
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About Power
Power is the rate at which work is done or energy is transferred, with average power calculated over a time interval and instantaneous power found from P = Fv when force and velocity are aligned. Work includes units, mechanical efficiency, and the distinction between power and total work or energy.
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