For the last few weeks we have been carrying out investigations on friction.
As an introduction we worked in groups to record the results when rolling different balls over different surfaces – the pitch, the grass and the playground. We noted which balls travelled well and which balls did not travel far on the surfaces.
The ball that travelled the furthest was the hockey ball on the pitch and the one that got stuck was the spikey ball rolling on the grass. We discovered that this was due to the amount of friction being created as the two surfaces touched each other.
The sponge ball did not travel well either. This was because the ball was quite light and did not have the force of the weight pressing down on the surfaces.
