Question

An electric car can accelerate from rest to 96.5 km/h (this is often called "from 0 to 60" measured in miles per hour) in 2.4 s. Find the power of the car, given its work is 500J.

Answer 1

Given,

$\sf \: Work\:=\:500\:joules \\ \\ \sf \: Time\: Elapsed\:=\:2.4\: seconds$

$\color{black} \boxed{Power\:=\: \frac{Work}{ \triangle\:Time\:Elapsed}}$

Substituting the values, we get,

$\sf \: Power\:=\: \frac{5000}{ 2 \cancel.4}$

$\sf { \underline{Power\:=\:208.33\:watt\:(approx)}}$