Question

What is the kinetic energy of a 1,928.26kg car that travels at 9.04m/s?

Answer 1

Given data:

* The mass of the car is 1928.26 kg.

* The speed of the car is 9.04 m/s.

Solution:

The kinetic energy of the car in terms of the mass and speed of the car is,

`\begin{gathered} K=(1)/(2)mv^2 \\ K=(1)/(2)*1928.26*(9.04)^2 \\ K=78790.25\text{ J} \\ K=78.79*10^3\text{ J} \\ K=78.79\text{ kJ} \end{gathered}`

Thus, the kinetic energy of the car is 78790.25 J or 78.79 kJ.