Question

What is the kinetic energy of a car with a mass of 1781 kg if it's traveling at 19.33 m/s? Submit your answer in exponential form.

Answer 1

332734.34 Joules

Explanation

Kinetic energy is a form of energy that an object or a particle has by reason of its motion and mass, it is represented by the expression

$\begin{gathered} E_k=\frac{1}{2}mv^2 \\ where\text{ m is the mass} \\ v\text{ is the velocity} \\ the\text{ unit for kinetik energy is Joules} \\ 1\text{ Joule} \\ 1\text{ Joule=kg}\frac{m^2}{s^2} \end{gathered}$

then

Step 1

a) Let

$\begin{gathered} mass=\text{ 1781 Kg} \\ v=19.33\frac{m}{s} \end{gathered}$

b) now,replace in the formula:

$\begin{gathered} E_{k}=\frac{1}{2}mv^{2} \\ E_k=\frac{1}{2}(1781kg)(19.33\frac{m}{s})^2 \\ E_k=332734.34\text{ Joules} \end{gathered}$

therefore, the answer is 332734.34 Joules

I hope this helps you