science 0.0 / 5 ? FunFunNone Created by: yord_GCreated on: 23-04-14 12:12 what is gravity? gravity is a force that pulls us towards the earth. 1 of 5 what is friction? friction is a force that causes things to speed up or slow down because a surface is too rough or smooth 2 of 5 what is air resistance? air resistance is a force that goes against a moving object. 3 of 5 what are newtons? newtons are a unit of mesurement for weight / gravity. 4 of 5 what do you use to measure newtons? you use a newtometer. 5 of 5
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