Question

calculate the kinetic energy of the car. remember the mass of the car is 5,000 kg and the velocity at the bottom is 34.5 m/s.

ke = 1/2mv²

show your work!

Explanation:

Step1: Substitute values into formula

$$KE=\frac{1}{2}mv^{2}=\frac{1}{2}\times5000\times(34.5)^{2}$$

Step2: Calculate $(34.5)^{2}$

$$(34.5)^{2}=34.5\times34.5 = 1190.25$$

Step3: Calculate $\frac{1}{2}\times5000\times1190.25$

$$\frac{1}{2}\times5000 = 2500$$
$$2500\times1190.25=2975625$$

Answer:

The kinetic energy of the car is \(2975625\space J\)