A "moving sidewalk" in an airport terminal building moves at a speed of 1.3m/s and is of length 32.0m . A woman steps on at one end and walks at a speed 1.9m/srelative to the moving sidewalk. Part A

How much time does she require to walk from one end to the other if she walks in the same direction the sidewalk is moving?Part BHow much time does she require to walk from one end to the other if she walks opposite to the direction the sidewalk is moving?

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