Note: Clear explanation and complete solution

13. Potential: 14. Potential: Kinetic Energy - what does it depend on? The an object moves, the it has. The greater the of a moving object, the it has. Kinetic energy depends on both owe the following word problems using the kinetic and potential energy formulas (Be sure to show your work!) Formulas: KE = 0.5 -m- v2 OR PE = m.g.h " = velocity or speed m = mass in kg g = 10 m/s/s h = height in meters 15. You serve a volleyball with a mass of 2.1. kg. The ball leaves your hand with a speed of 30 m/s. The ball has energy. Calculate it. 16. A baby carriage is sitting at the top of a hill that is 21 m high. The carriage with the baby has a mass of 1.5 kg. The carriage has energy. Calculate it. energy. 17. A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. The car has Calculate it.2. If the roller coaster car in the above problem were moving with twice the speed, then what would be its new kinetic energy? 23. A cart is loaded with a brick and pulled at constant speed along an inclined plane to the height of a seat-top. If the mass of the loaded cart is 3.0 kg and the height of the seat top is 0.45 meters, then what is the potential energy of the loaded cart at the height of the seat-top? 24. A 75-kg refrigerator is located on the 70th floor of a skyscraper (300 meters above the ground) What is the potential energy of the refrigerator? 25. The potential energy of a 40-kg cannon ball is 14000 J. How high was the cannon ball to have this much potential energy? IF most of the energy we use on earth comes from the sun - how does that energy (light and thermal) end up As energy in our food wind or moving watercart is loaded with a brick and pulled at constant speed along an inclined plane to the height of a seat-top. if the mass of the loaded cart is 3.0 kg and the height of the seat top is 0.45 meters, then what is the potential energy of the loaded cart at the height of the seat-top? 24. A 75-kg refrigerator is located on the 70th floor of a skyscraper (300 meters above the ground) What is the potential energy of the refrigerator? 23. The potential energy of a 40-kg cannon ball is 14000 J. How high was the cannon ball to have this much potential energy? IF most of the energy we use on earth comes from the sun - how does that energy (light and thermal) end up As energy in our food As energy of wind or moving water As energy that powers our lights energy when we move around AsCalculate it. 18 A cinder block, is sitting on a platform 20 m high. It weighs 7.9 kg. The block has energy 19, A roller coaster is at the top of a 72 m hill and weighs 134 kg. The coaster (at this moment) has energy. Calculate it. 20. There is a bell at the top of a tower that is 45 m high. The bell weighs 19 kg. The bell has energy. Calculate it. 2.1. Determine the kinetic energy of a 1000-kg roller coaster car that is moving with a speed of 20.0 m/s. 22. If the roller coaster car in the above problem were moving with twice the speed, then what would be its new kinetic energy? inclined plane to the height of a seat-dy then what is the13. Potential: 14. Potential: Kinetic Energy - what does it depend on? it has. an object moves, the it has. The of a moving object, the The greater the Kinetic energy depends on both