DO NOT NEED 2, 3, and 5

1. What is the final speed of a 1000 kg object which is traveling up at 60 m/s and then has a 1000 N force opposing it for 10 s? 2. A 5 kg projectile leaves a 20 kg launcher with a speed of 40 m/s. What is the recoil velocity of the launcher? 3. How much work must be done to stop a 100 kg object moving at 5 m/s? 4. How much work is needed to compress a spring 5 cm if the spring has a spring constant of 30 N/m? 5. A 3 kg flowerpot falls from a window ledge which is 5 m above a sidewalk. What is the speed of the pot as it hits the ground? 6. A 1 kg object is sitting against spring. The spring is compressed 5 cm and has a spring constant of 10 N/m. The spring is allowed to push the object until the spring is fully extended. What will be the speed of the object at that point? 7. A flywheel is rotating at 800 rpm. It has a mass of 10 kg and a diameter of 5 cm. What is its rotational KE? 8. What is the moment of inertia of a ring with a mass of 50 g and a diameter of 2.0 cm? 9. A disk is rotating at 50 rpm and slows to a stop in 30 revs. How long did it take to stop? 10. A force of 5 N is applied tangentially to the rim of a wheel having a 0.5 m radius. If the moment of inertia is 0.7 kgm', what is its angular acceleration? 11. A diver does a summersault. Her moment of inertia is 0.4 kg me and she rotates at 10 rpm. What moment of inertia does she need to decrease her rotational speed to 3 rpm? 12. A 20 m long beam is supported at both ends. The beam as a mass of 500 kg. There is a 600 kg crate 4 m from one end. Find the forces that support each end