Physics Revision 0.0 / 5 ? PhysicsRadioactivityElectromagnetismLight and OpticsEnergyGCSEAQA Created by: corndog!!!Created on: 09-02-14 16:50 What happens when a force moves an object? Energy is transferred and work is done. 1 of 13 How do you calculate work done? Work Done=Force applied (N) * Distance moved in the direction of the force (m) 2 of 13 What happens when an object is lifted up? Work is done against the force of gravity; its weight. 3 of 13 How do you calculate the change in gravitational potential energy? Change (J)=Weight (N) * Change in vertical height (m) 4 of 13 What is gravitational potential energy? The energy stored in an object because of the height it has been lifted to, against the force of gravity. 5 of 13 What is elastic potential energy? The energy stored in an elastic object when work has been done on the object to change its shape (e.g. catapult) 6 of 13 When a car brakes; what is kinetic energy transformed into? Heat in brakes and tyres 7 of 13 In a wind turbine; what is kinetic energy transformed into? Electricity; heat and sound 8 of 13 What a roller-coaster car goes up a ramp; what is kinetic energy transformed into? Gravitational potential energy and heat 9 of 13 When a bullet is fired into wood: what is kinetic energy transformed into? Heat 10 of 13 When a space shuttle re-enters the atmosphere; what is kinetic energy transformed into? Heat 11 of 13 When does an object have more kinetic energy? If it has a bigger mass or if it travels at a higher speed 12 of 13 What is the formula for kinetic energy? Kinetic energy= 13 of 13
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