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14 The 15) Chattered 20-ih a) 20 b) 3.0 16.0 16) A wheel acelerates with a contin of 1.5 velocity is 120 rad's, what is the velocity 4.0 a) 16 rad b) 20 / 2) Is 4) ZA 17) An ice skater performs a pirouette (a fost spin) by pulling in his outstretched his body. What happens to his moment of ini. 1, about the axis ofte a) It increases c) It does not change. b) It decreases. d) It changes, but it is impossible to tell 18) A uniform board of weight 50 N supports two children weighing 400 respectively. If the support is at the center of the board and the 400- the center, how far should the 300-N child sit from the center in orde ? 1.2 m 300N 400 N c) 1.8 m b) 1.4 m a) 1.6 m