What is the name of the energy stored by a moving object?
Elastic potential energy
Kinetic energy
Gravitational potential energy
Where might elastic potential energy be stored?
In a stretched catapult
In a catapult stored in a cupboard
In a candle
What is the main energy transfer for an apple falling from a tree?
Kinetic energy → elastic potential energy
Chemical energy → gravitational potential energy
Gravitational potential energy → kinetic energy
What is the main energy transfer for a long-distance runner?
Kinetic energy → chemical energy
Chemical energy → kinetic energy
Which of these cannot happen to energy?
Energy cannot be stored
Energy cannot be dissipated
Energy cannot be created
If 4,000 J of energy is transferred and 2,500 J is usefully stored, how much energy is wasted?
6,500 J
1,500 J
3,250 J
What happens to 'dissipated' energy?
It is transferred to useful stores
It disappears from the system
It spreads out into the surroundings
What is the gravitational potential energy stored in a 60 kg child sitting at the top of a 2 m high slide? (g = 10 N/kg)
1,200 J
600 J
120 J
The spring constant of a spring is 25 N/m. The spring is extended by 50 cm. How much elastic potential energy is stored?
31,250 J
1,250 J
3.125 J
A 4 kg ball has 50 J of kinetic energy. How fast is it moving? - Higher
12.5 m/s
5 m/s
2.5 m/s