1. A body of mass 15 kg rests on a frictionless horizontal plane and is acted on by a horizontal force of 30 N. (a) What acceleration is produced?

(b) How far will the body travel in 10 s?

(c) what will be its velocity at the end of 10 s?

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2