A playground ride consists of a disk of mass M = 36 kg and radius R = 1.6 m mounted on a low-friction axle (see figure below). A child of mass m = 23 kg runs at speed v = 2.7 m/s on a line tangential to the disk and jumps onto the outer edge of the disk. R m Part 1 (a) If the disk was initially at rest, now how fast is it rotating? (Enter your answer to at least three decimal places.) i rad/s Save for Later Attempts: 0 of 10 used Submit Answer Part 2 (b) What is the change in the kinetic energy of the child plus the disk? i Where has most of this kinetic energy gone? Save for Later Attempts: 0 of 10 used Submit Answer Part 3 (d) Calculate the change in linear momentum of the system consisting of the child plus the disk (but not including the axle), from just before to just after impact. (Assume the child is initially moving in the positive direction. Indicate the direction with the sign of your answer.) kg.m/'sPart 4 (e) The child on the disk walks inward on the disk and ends up standing at a new location a distance 0.80 m from the axle. Now what is the angular speed? (Enter your answer to at least two decimal places.) i rad/s Save for Later Attempts: 0 of 10 used Submit Answer Part 5 (f) What is the change in the kinetic energy of the child plus the disk, from the beginning to the end of the walk on the disk? i Save for Later Attempts: 0 of 10 used Submit Answer Part 6 (g) What was the source of this increased kinetic energy? eTextbook and Media Save for Later Attempts: 0 of 10 used Submit