Abasketball player, who weighs 600 newtons, jump 0.5 meters vertically off the floor. calculate her kinetic energy just before hitting the floor.
a)300j
b)3000j
c)9.81m/s^2
d)0

1. do the particles in the medium material move in the same direction of the wave or at opposite direction to the wave? explain your answer. 2. by inputting more energy into the wave, i.e a large shake of the spring, which wave property also increases? 3. are there forces of friction acting while a wave is passing through a medium?