1) What is the type of force that acts between two surfaces trying to move across each other? a) gravity b) twists c) friction d) magnetism 2) What does friction do to moving objects? a) speeds them up b) nothing c) slows them down 3) Name the force which pulls objects towards the centre of Earth. a) friction b) gravity c) magnetism d) speed 4) Complete the sentence: Friction works in the _________________ direction to the movement. a) same b) opposite

Friction flashback 4

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