Asled starts at rest with 51,450 j of potential energy. after traveling part of the way down the slope, the sled has 32,781 j of potential energy. if there is no friction, what is the kinetic energy of the sled?

The Kinectic energy of the sled is 18669j

Step-by-step explanation:

From the above question.

Because the sled starts at rest ,

The total energy of the sled = 51,450j

The potential energy ( P.E) after traveling down the slope = 32,781 j

Total energy = Potential energy + Kinectic Energy

Kinectic Energy = Total energy - Potential Energy

Kinectic energy = 51,450 j - 32,781 j

= 18669j

Therefore, the Kinectic Energy of the sled = 18669j

Hello!

Your answer is:

x-31 ≥ 66⇒x ≥ 97!

Hopefully this helps! Please correct me if im wrong! :C