OCR GCSE PHYSICS A Explaining motion

This section of the website contains suggestions for material that could be used with the OCR 21st century Science GCSE Physics Specification.

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I am grateful to OCR for permission to reproduce adapted versions of text from their 21st century Science Specification on this site. For the full version of the specification please see: OCR Physics A J635

P4.1 How can we describe motion?

Average speed, instantaneous speed and change of speed
Measuring speed (11-14)
Average speed (11-14)
Velocity and displacement (14-16)
Negative velocity (14-16)

11-14/Mechanics/Motion/Experiments/Ticker timer introduction
11-14/Mechanics/Motion/Experiments/Cars and carpet

Distance-time graphs
Distance-time graphs (14-16)

Velocity
Negative velocity (14-16)

14-16/Mechanics/Motion/Problems/Speed, velocity and acceleration

Velocity-time graphs
Velocity-time graphs (14-16)
Motion graphs (14-16)

14-16/Mechanics/Motion/Problems/Motion graphs
14-16/Mechanics/Motion/Problems/Motion graphs 2
14-16/Mechanics/Motion/Problems/Explaining motion 1

P4.2 What are forces?

Forces
Force measurement (11-14)

Forces on interacting bodies
Newton's Third Law (14-16)
Two forces in an interaction pair
Friction introduction (11-14)

Friction
Friction introduction (11-14)
Friction and drag (14-16)

Rockets and jet engines
Jet engine (14-16)
Rockets (14-16)

14-16/Mechanics/Forces in motion/Problems/Newton's Laws
14-16/Mechanics/Forces in motion/Problems/Newton's Laws grid
14-16/Mechanics/Forces in motion/Problems/Explaining motion 2

P4.3 Forces and motion

Addition of forces
Addition of forces (11-14)
Newton's second law (14-16)

Momentum and momentum change
Momentum and impulse (14-16)
Momentum film (14-16)

14-16/Mechanics/Forces in motion/Experiments/Momentum experiments

Driving force and drag
Friction and drag (14-16)

Impulse and momentum
Momentum and impulse (14-16)

Road safety
Car safety (14-16)
Newton's first law (14-16)

14-16/Mechanics/Forces in motion/Problems/Momentum
14-16/Mechanics/Forces in motion/Problems/Momentum problems 2
14-16/Mechanics/Forces in motion/Problems/Explaining motion 3

P4.4 How can we describe motion in terms of energy changes?

Kinetic energy and gravitational potential energy
Kinetic energy (14-16)
Potential energy (14-16)

Forces and work
Forces and energy (11-14)
Work (14-16)

Gravitational potential energy
Potential energy (14-16)

14-16/Mechanics/Forces in motion/Problems/Work and energy

Work and kinetic energy
Kinetic energy (14-16)
Work (14-16)

14-16/Mechanics/Forces in motion/Problems/Kinetic and potential energy

Conservation of energy
Energy (11-14)
Kinetic energy (14-16)

14-16/Mechanics/Forces in motion/Problems/Explaining motion 4