Question

A 5.00-kg object is moving at a constant speed of 8.00 m/s on a horizontal surface. What is the kinetic energy of the car?

Answer 1

Answer on Question #58140-Physics-Mechanics-Relativity

A 5.00-kg object is moving at a constant speed of 8.00 m/s on a horizontal surface. What is the kinetic energy of the car?

Solution

The kinetic energy of the car is given by the formula:

$$K = \frac{m v^2}{2},$$

where $m$ is the mass of the car and $v$ is the speed of the car.

$$K = \frac{5.00 \ \mathrm{kg} \cdot \left(8.00 \ \frac{\mathrm{m}}{\mathrm{s}}\right)^2}{2} = 160 \ \mathrm{J}.$$

Answer: 160 J.

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