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Physics Investigation: Motion of a Trolley Plan: Aim: To investigate the factors affecting the motion of a trolley. Introduction: Forces affect the motion of a trolley. There are two main forces which affect it and these are friction and gravity. Friction allows the wheels of the trolley to grip the surface of the ramp which it is travelling on. Also the trolley will slow down because of the resistance of the air as the shape of the trolley is not very aero dynamic. Friction is what allows the trolley to come to a stop. Gravity (the downward force) is responsible for making the trolley move as it pulls it down towards the centre of the earth. As there is no way the trolley can go through the slope it has to travel down it. The steeper the slope, the faster the trolley will go because there will be less time taken for the trolley...

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