Consider a Newton's Cradle as shown below. All of the spheres behave like billiard balls have the same mass, m, and the same velocity immediately before impact, V.
1) Present the mathematical relationships that explain the observed motion
2) Explain why the relationships are appropriate
3) Using the information above, state the relationship between v/ and ve, where V, is the velocity immediately
after impact

Does baby oil have a high or low velocity?

You and a friend (alex) are at a a tree-top adventure park .. . part of the course requires you to climb up a rope. you both climb the same rope in the same amount of time. however, the tension in the rope is greater when alex climbs. who did the most work? alex did - more tension means more force - more force means more work was done you did - less tension means less force - less force means more work was done to find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? when more work was done, the couch was moved less. when more work was done, the couch was moved further. when more work was done, the couch wasn't moved at all. when more work was done, the couch was moved the same distance.

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be