Which object has the least momentum?
object a: m = 1 kg, v = 100 m/s
object b: m = 10 kg, v = 12 m/s
object c: m = 0.5 kg, v = 1000 m/s
object d: m = 100 kg, v = 2 m/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