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?

Question

Choose the best answer from the options below:
A 6.67 W
B 0.111 W
C 0.150 W
D 400 W
E 25 KW

Answer 1

To calculate power, we use the formula:

Power = Work / Time

In this case, the force (400 N) is applied for a distance of 5 km = 5000 m. The work done can be calculated as:

Work = Force × Distance = 400 N × 5000 m = 2000000 Nm

Converting 60 minutes to seconds:

Time = 60 minutes × 60 seconds/minute = 3600 seconds

Now we can calculate power:

Power = 2000000 Nm / 3600 s ≈ 555.56 W

Therefore, the correct answer is not provided in the given options.