To end our 'Forces and Magnets' topic, we tested our balloon-powered cars to investigate how friction affects speed. We concluded that the rougher the surface, the more friction was produced and therefore the car travelled the least distance on concrete compared to the table. Take at look at our investigating.
We have investigated the link between mass and weight and discovered that gravity pulls objects down with a force of 1 Newton for every 100 grams.
We have explored the pulling force of magnets and discovered that iron is magnetic.