You place a uniform solid disk and a uniform thin ring next to each other at the top of an incline of height h and release them from rest at the same instant.

(a) if they roll without slipping, what are the speeds of each when they reach the bottom? (use any variable or symbol stated above along with the following as necessary: g for the acceleration of gravity.) vdisk = vring =

(b) which object reaches the bottom first?

Atennis player used a tennis racket to hit a tennis ball with a mass of 0.25 kg with a force of 5.25 newtons. how does the force the tennis racket exerted on the tennis ball compare with the force the tennis ball exerted on the tennis racket? a. the force of the tennis racket on the tennis ball is equal in magnitude and opposite in direction to the force the tennis ball exerted on the tennis racket. b. the force of the tennis racket on the tennis ball is equal in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. c. the force of the tennis racket on the tennis ball is less in magnitude and in the same direction as the force the tennis ball exerted on the tennis racket. d. the force of the tennis racket on the tennis ball is greater in magnitude and opposite in direction as the force the tennis ball exerted on the tennis racket.