A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 58.0 m/s and returns the shot with the ball traveling horizontally at 34.0 m/s in the opposite direction. (Assume the initial direction of the ball is in the -x direction.)
(a) What is the impulse delivered to the ball by the racket?
5.52 N·s 0.0600(34 - (-58))=5.52
(b) What work does the racket do on the ball?
____J
Having trouble figuring out the work.
2007-10-06 11:04:45 · 2 answers · asked by burkehud 2 in Science & Mathematics ➔ Physics
Work will equal the change in kinetic energy.
KE = 1/2 m v^2
2007-10-06 12:58:20 · answer #1 · answered by Demiurge42 7 · 0⤊ 0⤋
Yes, I do buy things on impulse. Usually things like video games or junk food. Once I bought an expensive guitar on impulse. I already had one and had more pressing issues to take care of, but it looked so beautiful I bought it anyway. I would never buy something like a house or a new car on impulse.
2016-04-07 08:01:12 · answer #2 · answered by Anonymous · 0⤊ 0⤋