Friction resists

1- Movement
2- Motion
3- All the above
4- Sliding

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

For which pair of objects would adding the same a

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)