11 mark
A runner has a mass of 80 kg and moves at a speed of 5 m/ s.
Calculate the kinetic energy of the runner.
Use the equation: kinetic energy = 0.5 × mass × (speed)2
200 J
1000 J
2000 J
40 000 J
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Conservation of Energy (OCR Gateway GCSE Physics: Combined Science)
Topic Questions
11 mark
The kinetic energy of motorbike X is 10 kJ.
Motorbike Y has the same speed but double the mass.
What is the kinetic energy of motorbike Y?
Use the equation: kinetic energy = 0.5 × mass × (speed)2
5 kJ
10 kJ
20 kJ
40 kJ
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21 mark
A ball is thrown vertically into the air.
Energy is transferred from a chemical store.
Where is the useful energy transferred to?
A gravitational store and a thermal store only.
A gravitational store only.
A gravitational store and a chemical store only.
A thermal store and a chemical store only.
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11 mark
Which of the following has the most kinetic energy?
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21 mark
A boy of mass 65 kg climbs a ladder of height 3.0 m.
Calculate the gain in potential energy of the boy.
Use the equation: potential energy = mass × height × gravitational field strength
Gravitational field strength = 10 N/kg.
30 J
195 J
650 J
1950 J
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31 mark
A car has a mass of 1000 kg and is travelling at a speed of 20 m/s.
Calculate the kinetic energy of the car.
10 000 J
20 000 J
200 000 J
400 000 J
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41 mark
A car has a mass of 1000 kg and a kinetic energy of 12500 J.
Calculate its speed.
Use the equation: kinetic energy = 0.5 × mass × (speed)2
3.5 m/s
5.0 m/s
6.3 m/s
25.0 m/s
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51 mark
A boy kicks a football with a mass of 400 g.
What is the potential energy of the football when it is 0.8 m above the ground?
- gravitational field strength (g) = 10 N/kg.
0.032 J
3.2 J
320 J
3 200J
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