I NEED AN ANSWER! A sled going down a hill covered in snow eventually comes to
a stop. Explain why this happens in terms of energy. Use
the terms potential energy, kinetic energy , and friction.

When an object is heated it contracts. a. true b. false

What object a collides with object b and bounces back its final momentum is?

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?