Question

A 10-kilogram object at rest at point A accelerates uniformly from point A to point B in 4 seconds, attaining a maximum speed of 10 meters per second at point B. What is the kinetic energy, in ), of the object at point B?

Answer 1

ANSWER:

500 J

STEP-BY-STEP EXPLANATION:

Given:

Mass of object = 10 kg

Speed = 10 m/s

The kinetic energy is calculated using the following formula:

$\begin{gathered} E_k=\frac{1}{2}m\cdot v^2 \\ \text{ We replacing} \\ E_k=\frac{1}{2}\cdot10\cdot10^2 \\ E_k=500\text{ J} \end{gathered}$

The kinetic energy is 500 J.