a conveyor belt moves a 40 kg box at a velocity of 2 m/s. what is the kinetic energy of the box while it is…

Explanation:

Step1: Recall kinetic - energy formula

The formula for kinetic energy is $K = \frac{1}{2}mv^{2}$, where $m$ is the mass and $v$ is the velocity.

Step2: Identify given values

Given $m = 40\ kg$ and $v = 2\ m/s$.

Step3: Substitute values into formula

$K=\frac{1}{2}\times40\times(2)^{2}$. First, calculate $(2)^{2}=4$. Then, $\frac{1}{2}\times40 = 20$. Finally, $20\times4=80\ J$.

Answer:

80 J