please handwrit/e and show all work and steps

9. A very light ideal spring having a spring constant (force constant) of 8.2 N/cm is used to lift a 2.2-kg tool with an upward acceleration of 3.25 m/s2. If the spring has negligible length when it us not stretched, how long is it while it is pulling the tool upward? B i U Font Family AVA DE E E .@60 10. A 2.0-kg object is lifted vertically through 3.00 m by a 150-N force. How much work is done on the object by gravity during this process? B i U Font Family12. How fast must a 6.0-kg cat run to have a kinetic energy of 150 J? B i U Font Family AA A E 9 MA17. How high a hill would a 75-kg hiker have to climb to increase her gravitational potential energy by 10,000 J? B i U Font Family AVA DE EE . @60 18. You want to store 1,000 J of energy in an ideal spring when it is compressed by only 2.5 cm. What should be the force constant (spring constant) of this spring? B i U Font Family AADEE E .3622. A frictionless simple pendulum, with a small but dense 4.4-kg mass at the end and a length of 75 cm, is released from rest at an angle of 50 with the vertical. (a) To what height above its lowest point does the mass swing on the other side? (b) What is the speed of the mass at the bottom of the swing? B i U Font Family - AA A25. A roller coaster starting from rest descends 35 meters in its initial drop and then rises 23 meters when it goes over the first hill, which has a circular shape over the top. If a passenger at the top of the hill feels an apparent weight equal to one-half of her normal weight, what is the radius of curvature of the first hill? Neglect any frictional losses. B i U Font Family - AA A DE27. A sled is moving along a horizontal surface with a speed of 5.7 m/s. It then slides up a rough hill having a slope of 11 above the horizontal. The coefficient of kinetic friction between the sled and the surface of the hill is 0.26. How far along the surface does the block travel up the incline? B i U Font Family EEB 28. How many joules of energy are used by a 2.0 hp motor that runs for 1.0 hour? (1 hp = 746 W) B i U Font Family AAA DEE EG30. Water flows over a waterfall that is 20 m high at the rate of 4.0 x 104 kg/s. If this water powers an electric generator with a 40% efficiency, how many watts of electric power can be supplied? B i U Font Family AA A C