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

a conveyer belt moves a 40 kg box at a velocity of 2 m/s. what is the kinetic energy of the box while it is on the conveyor belt?\n40 j\n80 j\n160 j\n1,600 j

a conveyer belt moves a 40 kg box at a velocity of 2 m/s. what is the kinetic energy of the box while it is on the conveyor belt?\n40 j\n80 j\n160 j\n1,600 j

Answer

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: Substitute given values

Given $m = 40$ kg and $v = 2$ m/s. Substitute into the formula: $K=\frac{1}{2}\times40\times(2)^{2}$.

Step3: Calculate the result

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

Answer:

C. 80 J