For a top player, a tennis ball may leave the racket on the serve with a speed of 160 m/s. If the ball has a mass of 0.080 g and is in contact with the racket for about 5 ms (0.005 s), estimate the average force on the ball.

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

Which sound characteristic is not affected by the relative motion of an object

Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not