Question

The Tesla Roadster electric car is rated at 16.8kW. How much energy does it use during a one hour drive? Answer in MJ

Answer 1

(16.8 kW) means (16,800 joules/second)

Energy in 1 hour = (1 hour) x (16,800 J/s) x (3,600 s/hour)

Energy = (16,800 x 3,600) J

Energy = 60,480,000 Joules

Energy = 60.48 MJ

Answer 2

`E = 60.5 MJ`

Step-by-step explanation:

As we know that power is defined as rate of energy

So we will have

`P = (E)/(t)`

so we will have

`E = P * t`

`P = 16.8 kW`

`t = 1 hour`

`t = 3600 s`

now we have

`E = (16.8 * 10^3)(3600)`

`E = 60.5 MJ`