Question

Calculate the power of a train that uses 2MJ of chemical energy in 4
seconds.

Answer 1

500 kW

Step-by-step explanation:

Given that,

Energy of the train, E = 2 MJ = 2×10⁶ J

Time, t = 4 seconds

We need to find the power of the train. We know that,

Power = energy/time

So,

`P=(2* 10^6)/(4)\\\\P=500000\ W\\\\or\\\\P=500\ kW`

So, the power of the train is equal to 500 kW.