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Pedalling a bikePush or pull?

Opening a boxPush or pull?

Tug of warPush or pull?

Flicking a light switchPush or pull?

A horse jumping a fencePush or pull?

Kicking a ballPush or pull?

Push or pull?A force is a push or a pull. These are all examples of forces being used. For each

picture, draw a circle around the word ‘push’ or ‘pull’.

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Friction investigationFriction is a pushing force between two surfaces.

If the surfaces slide across each other easily, this shows that there is low friction. •If the surfaces grip each other, there is high friction. •

Carry out an investigation, using a Newton meter to measure, to find out which trainer has the highest friction against a surface. Remember to keep the test fair – change the trainer but keep everything else the same.

Whose shoe had the highest friction?.........................................................................

Describe the trainer’s sole. What provided the friction?

....................................................................................................................................................................................

Whose shoe is it? Measurement