Can you help me solve these problems, and I would like to see the work you did to get the answers

Kinetic Energy and Potential Energy 5. A coconut falls out of a tree 12.0 m above the ground and hits a bystander 3.00 m tall on the top of the head. It (a) What is the force being applied to the box? (Use: Fapp -fs = ma) (b) If this force were applied by a sp bounces back up 1.50 m before falling to the ground. If the mass of the coconut is 2.00 kg, calculate the potential energy ied by a spring, what would the spring constant have to be in order for the spring to be stretched to only 0.0800 m while pulling the box? of the coconut relative to the ground at each of the following sites: (a) while it is still in the tree, (b) when it hits the bystander on the head, 23. A spring (k = 2.3 N/m) is attached to an object of mass = 10. kg. If the object is hung from the ceiling by this spring, (c) when it bounces up to its maximum height, (d) when it lands on the ground, how much would the spring be stretched? (e) when it rolls into a groundhog hole, and falls 2.50 m to the bottom of the hole. 24. If Us = 0.50, how much force must be applied to a spring (spring constant of 0.80 N/m) which is attached to a block of 6. A 50.0 kg bicyclist on a 10.0 kg bicycle speeds up from 5.00 m/s to 10.0 m/s. wood (mass = 4.0 kg) in order to just begin to move the block? (Use: Fapp - fs = ma; Recall that f = [FN) (a) What was the total kinetic energy before accelerating? (b) What was the total kinetic energy after accelerating? 25. A 3.0 kg metal ball, at rest, is hit by a 1.0 kg metal ball moving at 4.0 m/s. The 3.0 kg ball moves forward at (c) How much work was done to increase the kinetic energy of the bicyclist? 2.0 m/s and the 1.0 kg ball bounces back at 2.0 m/s. (d) Is it more work to speed up from 0 to 5.00 m/s than from 5.00 to 10.0 m/s? (a) What is the total kinetic energy before the collision? (b) What is the total kinetic energy after the collision? (c) How much energy is transferred from the small ball to the large ball? 8. Calculate the potential energy of a 5.00 kg object sitting on a 3.00 meter high ledge. 26. When a 50.0 kg person hangs from a 20.0 m bungee cord it stretches to a length of 32.0 m. 9. A 10.0 kg rock is at the top of a 20.0 m. tall hill. How much potential energy does it have? (a) Find the spring constant of the bungee cord, assuming it obeys Hooke's law. ( b ) How much work is required to stretch the cord by this much? 10. A 25 N object is 3.0 meters up. How much potential energy does it have? 27. A spring with a force constant of 5.20 N/m has a relaxed length of 2.45 m. When a mass is attached to the end of the 1 1. How high up is a 3.00 kg object that has 300. J of energy? spring and allowed to come to rest, the vertical length of the spring is 3.57 m. Calculate the elastic potential energy stored in the spring. 12. A 4.00 kg rock is rolling 10.0 m/s. Find its kinetic energy. 28. The staples inside a stapler are kept in place by a spring with a relaxed length of 0.115 m. If the spring constant is 13. An 8.0 kg cat is running 4.0 m/s. How much kinetic energy does it have? 51.0 N/m, how much elastic potential energy is store in the spring when its length is 0.150 m? 14. At the moment when a shotputter releases a 5.00 kg shot, the shot is 3.00 m above the ground and travelling at 15.0 29. ) A 6.0 kg metal ball moving at 4.0 m/s hits a 6.0 kg ball of putty at rest and sticks to it. The two go on at 2.0 m/s. m/s. It reaches a maximum height of 14.5 m above the ground and then falls to the ground. If air resistance is negligible, (a) What is the kinetic energy of the metal ball be (a) What was the potential energy of the shot as it left the hand relative to the ground? (b) What is the kinetic energy of the metal ball after it hits? (b) What was the kinetic energy of the shot as it left the hand? (c) What is the kinetic energy of the putty ball after being hit? (c) What was the total energy of the shot as it left the hand? (d) How much energy does the metal ball lose in the collision? (d) What was the total energy of the shot uch kinetic energy does the putty ball gain in the collision? ed its maximum height? (e) What was the potential energy of the shot at its maximum height? (f) What happened to the rest of the energy? (f) What was the kinetic energy of the shot at its maximum height? (g) What was the kinetic energy of the shot just as it struck the ground? Conservation of Energy 15. A rolling ball has 18 J of kinetic energy and is rolling 3.0 m/s. Find its mass. 1. A 10. kg ball is thrown into the air. It is going 3.0 m/s when thrown. How much potential energy will it have at the top ? 16. A 4.0 kg bird has 8.0 J of kinetic energy. How fast is it flying? 2. A 4768-kg roller coaster train full of riders approaches the loading dock at a speed of 17.1 m/s. It is abruptly 17. A rubber band is stretched from its resting position a distance of 0.10 m. If the spring constant is 2.5 N/m, what is the decelerated to a speed of 2.20 m/s over a distance of 13.6 m. Determine the magnitude of the retarding force which acts force exerted on the rubber band? upon the roller coaster cars. 3. A 4.00 kg ball is on a 5.00 m ledge. If it is pushed off the ledge, how much kinetic energy will it have just before hitting the ground? 19. If a spring is stretched a distance of 0.25 m with a force of 20. N, what is the value of the spring constant? 4. A 25 kg ball is thrown into the air. When thrown it is going 10. m/s. Calculate how high it travels. 20. If the spring constant of a pogo stick is 3500. N/m and the weight of the person on the pogo stick is 700. N, how much is the spring in the bottom of the pogo stick compressed? 5. A 3.0 kg rock sits on a 0.80 meter ledge. If it is pushed off, how fast will it be going at the bottom? 6. A catcher's mitt recoils a distance of 12.9 cm in bringing a 142-gram baseball to a stop. If the applied force is 88 N, then what was the speed of the baseball at the moment of contact with the mitt? 22. A box having a mass of 1.50 kg is accelerated across a table at 1.50 m/s2. The coefficient of friction on the box is 0.300