a car is moving at a constant speed of 20mm/sec, d force retarding its motion is 500N, calculate the engine power of the car required to maintain its motion
To calculate the engine power required to maintain the motion of the car, we need to use the formula:
Power = Force x Speed
Here, the force retarding the motion of the car is 500N and the speed of the car is 20mm/sec. However, we need to convert the speed to meters per second (m/s) for consistency.
1mm = 0.001m
So, 20mm/sec = 20 x 0.001m/sec = 0.02m/sec
Now we can calculate the power:
Power = 500N x 0.02m/sec
Power = 10 Watts
Therefore, the engine power required to maintain the motion of the car is 10 Watts.