A 1200 kg truck accelerates from rest to a speed of 20 m/s in 10 seconds. What is the average power output of the truck's engine?
To calculate the average power output of the truck's engine, we need to determine the work done by the engine and then divide it by the time.
Calculate the work done
The work done is equal to the change in kinetic energy of the truck. The formula for kinetic energy is:
Where:
is the mass of the truck,
is the final speed.
First, calculate the final kinetic energy:
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