Answer:
The box is moved at constant speed, then the change in kinetic energy is zero.
Explanation:
Let suppose that box moves at constant speed, meaning that its kinetic energy ([tex]K[/tex]), measured in joules, is expressed by the following equation:
[tex]K = \frac{1}{2}\cdot m\cdot v^{2}[/tex] (1)
Where:
[tex]m[/tex] - Mass, measured in kilograms.
[tex]v[/tex] - Speed, measured in meters per second.
If the box moves at constant speed, then we notice that [tex]v_{f}^{2}-v_{o}^{2} = 0[/tex], therefore, [tex]\Delta K = 0[/tex]. In a nutshell, if the box is moved at constant speed, then the change in kinetic energy is zero.
