(g = 9.8Nkg-1)<\/p>\n
1. Calculate the potential energy gained by a 10kg mass when it is raised to a height of 10m.<\/p>\n
2. A football of mass 600g is kicked 12m up into the air. How much potential energy does it gain?<\/p>\n
3. A diver of mass 60kg dives from a platform 5m up. Find how much potential energy she loses.<\/p>\n
4. A man of mass 80kg uses a lift to go from the second floor of a building (6m above ground level), up to the eighth floor (24m above ground level). Calculate the change in potential energy.<\/p>\n
5. An astronaut on the Moon throws a stone of mass 2kg to a height of 25m. If the gravitational field strength on the Moon is 1.6Nkg-1, find the potential energy gained.<\/p>\n
6. A dog of mass 20kg gains 784J of potential energy by climbing up a flight of stairs. Calculate the height of the stairs.<\/p>\n
7. A rock of mass 4kg falls from the top of a cliff and loses 4.9kJ of potential energy. How high is the cliff?<\/p>\n
8. During the high jump event in the school sports a girl just clears the bar at a height of 1.25m. If she has 490J of potential energy at this height, what is her mass?<\/p>\n
9. A pencil rolls off a desk 80cm high and has lost 196mJ of potential energy by the time it reaches the floor. Find the mass of the pencil.<\/p>\n
10. An alien on the surface of Jupiter has a mass of 200kg. If it gains 5.2MJ of potential energy by rising to a height of 1km above the surface, calculate the gravitational field strength on Jupiter.<\/p>\n","protected":false},"excerpt":{"rendered":"
(g = 9.8Nkg-1) 1. Calculate the potential energy gained by a 10kg mass when it is raised to a height of 10m. 2. A football of mass 600g is kicked 12m up into the air. How much potential energy does it gain? 3. A diver of mass 60kg dives from a platform 5m up. Find … Continue reading Dynamics & Space Exercise 13<\/span>