Question

Several questions in this one:
1) How do I find kinetic energy in a system?
2) How do I find mechanical energy in a system?
3) How do I find momentum at the highest point?

Answer just one if you can, all answers are appreciated!

Answer 1

1) 1/2mv^2

Answer 2

thank you!

Answer 3

2. mechanical energy=potential energy + kinetic energy
W=mgh+1/2mv^2

Answer 4

not sure about 3rd one, at the highest point meaning at the top of sth or at maximum momentum?

Answer 5

as it should be at maximum velocity to reach maximum momentum, all energy must be converted into kinetic, so PE must be zero. Therefore, if at highest point where potential energy is maximum then, momentum is zero as velocity equals zero

Answer 6

THank you!