Physics — Forces and Energy

Speed and motion graphsSign up

Calculate speed (speed = distance / time). · Interpret and draw simple distance / time graphs.

Forces, moments and pressureSign up

Describe the effects of balanced and unbalanced forces on motion. · Identify and calculate turning forces (moment = force x distance). · Explain that pressure is caused by the action of a force, exerted by a substance, on an area (pressure = force / area).

Particles, pressure and diffusionSign up

Use particle theory to explain pressures in gases and liquids (qualitative only). · Describe the diffusion of gases and liquids as the intermingling of substances by the movement of particles.