What is the power of an engine that pulls a 1000kg automobile at a steady speed of 10m/s along a level road?
no acceleration means no force
no force means no work
no work means no power
To determine the power of an engine, you need to know the force applied by the engine and the velocity at which the work is done.
The formula to calculate power is: Power = Force × Velocity
In this case, the force applied by the engine is equal to the product of the mass of the automobile (1000 kg) and the acceleration due to gravity (9.8 m/s^2). This is because the weight of the automobile (mass × gravity) is balanced by the force applied by the engine to move the car forward.
Force = Mass × Acceleration due to gravity = 1000 kg × 9.8 m/s^2
Next, we can calculate the power by multiplying the force by the given velocity of the automobile (10 m/s):
Power = Force × Velocity = (1000 kg × 9.8 m/s^2) × 10 m/s
By performing the above calculation, you can find the power of the engine that pulls the 1000 kg automobile at a steady speed of 10 m/s along a level road.