Question

I need help finding the kinetic energies (reupload)

Answer 1

Answer:

18.51 J

Explanation:

First, we need to find the Kinetic energy of the disk. Since the disk travels in a straight line, we can use the formula $K=\frac{1}{2}mv^2$:

$Kdisk=\frac{1}{2} 0.033*33.5^2\\Kdisk=18.51 J$

Since no other force is present, no friction, sound, or vibration, energy must be conserved. Therefore, the answer for both is 18.51 J.