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9. A projectile is fired at t=0 from the point o, with an initial velocity which makes an angle a with the horizontal axis as shown in the figure below. Given Vo=27.Om/s and O-35.0, Calculate the maximum range a. 6.12 m c. 18.36 m c. 786 N d. 69.90 m b.12.24 m 10. What weight will a spring scale read for a mass of a 60 kg woman stand on it in an elevator that moves downward with an acceleration of 6.0 m/s?? a. 984 N d. 228 N b. 588 N 11. A wheel 7.0 m in radius accelerates uniformly from 120 rad/min to 360 rad/min in 2.9 s. What is the angular acceleration? a. 2.26 rad/s^2 b. 6.55 rad/s^2 C. 1.38 rad/s^2 d. 2.76 rad/s^2 12. A person pull a 35 kg block 50 m along over a rough, horizontal surface with Hx = 0.30 a constant force Fp = 150 N, which acts at a 30° above the horizontal floor. If the frictional force is 80 N, what is the total net work done? a. 1433) b. 11295) C. 1917 d. 2495 ) 13. A child bounces a 52 g superball on the sidewalk. The velocity of the superball is from 24 m/s downward to 15 m/s upward. If the time contact with the sidewalk is 1.25 ms, what is the magnitude of the average force exerted on the superball on the sidewalk? a. 1622.4 N b. 1398.4 N c. 1248 N d. 374.4 N 14. A 2.33 kg mass with an initial velocity of 736 mlolu