Your motorbike breaks down five Km from your home. You use 400 N for the entire 60 minutes that it takes you to push this motorbike home. How powerful were you? How many Watts?
To calculate power, we can use the formula:
Power (in watts) = Work / Time
Given that you used 400 N of force for 60 minutes (which is equal to 3600 seconds), we can calculate the work done:
Work = Force * Distance
Distance = 5 km = 5000 m
Work = 400 N * 5000 m = 2,000,000 J
Now, we can plug in the values to calculate power:
Power = 2,000,000 J / (3600 s) = 555.56 W
Therefore, you were exerting a power of approximately 555.56 watts.