What is the main thing that holds soil in place ?

A0.17kg ball rolls at 0.75m/s to the right on a frictionless surface and collides with a 0.17kg ball rolling to the left at 0.65m/s. (elastic collision) what is the final velocity of the second ball when the first is 0.5m/s to the left? what is the change in kinetic energy before and after?

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little