Recent content by tmang

A 5.00 g bullet is fired into a 6.00 kg block, which is suspended from a string 1.00 m long. The string deflects through an angle of 12.0°. How fast was the bullet moving?a Transitional KE = ½ mv2 Rotational KE = ½ I2 Elastic PE = ½k L 2 I'm not sure those are the right formulas...

ahh.. I get it now.. I was missing the key points of the Law of Conservation.. Thank you so much for your great help! thank you..

1.A large superball and a small superball are dropped from the same initial height H. Both balls bounce back up to a height h , which is just a bit less than H. If, however, the small superball is placed immediately above the large superball and both are dropped to the ground simultaneously from...