Physics P2 3.3 Kinetic energy. 0.0 / 5 ? PhysicsForces and MotionGCSEAQA Created by: Atlanta and JacobCreated on: 01-10-16 11:05 What does he kinetic energy of a moving object depend on? Its mass and its speed. 1 of 13 What is elastic potential energy? The energy stored in an elastic object when work is done on the object. 2 of 13 What happens if an elastic band is stretched and released? Elastic potential energy is transferred to kinetic energy. 3 of 13 What energy do all moving objects have? Kinetic energy. 4 of 13 How is the amount of mass and the speed of an object relative to the amount of kinetic energy it has? The greater the mass and the faster the speed of an object, the more kinetic energy it has. 5 of 13 What equation is used to calculate kinetic energy? E_k = 1 over 2 (half) x m x v^2 (look up). 6 of 13 In the equation to calculate kinetic energy, what is E_k? The kinetic energy in joules (J). 7 of 13 In the equation to calculate kinetic energy, what is m? The mass in kilograms (kg). 8 of 13 In the equation to calculate kinetic energy, what is v? The speed in metres per second (m/s). 9 of 13 When is an object described as being elastic? If it regains its shape after being stretched or squashed. 10 of 13 When work is done on an elastic energy to stretch or squash it what is the energy transferred to it and what happens to that energy? Elastic potential energy which is stored, and then released when the object returns to its original shape. 11 of 13 A boy of mass 40 kg runs at a speed of 5 m/s. What is his kinetic energy? 500 J. 12 of 13 When a spring is squashed and released it warms up. Why? Some elastic potential energy is transferred by heating. 13 of 13
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