Question

Mr. V's dog (his name is Newton) runs at 5 m/s and has a mass of 36 kilograms. How much energy would Newton have as he is tackling Mr. V?

Answer 1

`450J`

Step-by-step explanation

We want to find the amount of energy that Newton will have as he is tackling Mr. V.

This simply means that we want to find the kinetic energy that Newton possesses.

Kinetic energy is the energy a body possesses due to its motion and it can be found by applying the formula:

`E=(1)/(2)mv^2`

where m = mass, v = velocity

From the question:

`\begin{gathered} m=36\text{ kg} \\ v=5\text{ m/s} \end{gathered}`

Therefore, the amount of energy that Newton possesses as he is tackling Mr. V is:

`\begin{gathered} E=(1)/(2)\cdot36\cdot5^2 \\ E=450J \end{gathered}`