Choose the correct answer. 1.1 In Newion's cradle apparatus, if one ball ar the end is lifted up and released, only cone ball at the other end is pushed out because, (1-phits) a) Only conservation of mome b) Only conservation of kinet icturi mast hold c) Both conservation of mometic energy tuent conservation or kinetic energy must hold. d) None of the above 1.2 If you push your friend forwand on an icy floor while initially both you and your friend not moving. Your friend is pushed forward while you have to be pushed backward, This is becatise, (1-pots) a) Only conservation of momentum must hold b) Only conservation of kinetic energy must hold c) Both conservation of momentum and consenvation of kinetic energy must hold. d) None of the above 1.3 Terminal velocity occurs for a falling object when, (1-pnts) a) Drag force equals gravitational force b) Drag force exceeds gravitational force c) In the absence of air resistance d) None of the above. 1.4 The force that provides for the centripetal force on cars that negotiate a banked curved road is, (1-pnts) a) Gravitational force mg b) Component of the normal force c) Frictional force d) None of the above 1.5 A mass W hangs from two strings as shown; W=10kg and =30. Use g=10m/s2. (1-pnts) a) T1=400N. b) T1=300N. c) Ti=200N. d) T1=100N