In a historical movie, two knights on horseback start from rest 97 m apart and ride directly toward each other to do battle. sir george's acceleration has a magnitude of 0.16 m/s2, while sir alfred's has a magnitude of 0.30 m/s2. relative to sir george's starting point, where do the knights collide?

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