No that doesn't work. I have one more question, this section seems to be particularly bad at explaining the concepts.
A 22.00 lead sphere is hanging from a hook by a thin wire 3.80 long, and is free to swing in a complete circle. Suddenly it is struck horizontally by a 5.00 steel dart that...
Homework Statement
A bullet with a mass of 7.00 , traveling horizontally with a speed of 400 , is fired into a wooden block with mass of 0.850 , initially at rest on a level surface. The bullet passes through the block and emerges with its speed reduced to 200 . The block slides a distance...