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Physics Craters Coursework Preliminary work: I am investigating the change in crater size when a ball bearing of the same size is dropped from different heights into a tray of sand. The physics which may be relevant is gravitational potential energy (mgh) and work done. There are a number of factors which may affect the experiment. These are: density of sand, size/weight of ball and height at which the ball is released from. The thing I will change in my investigation is height at which the ball is released from. Plan: Apparatus: tray of sand, ruler, clamp and clamp stand, callipers, magnet, ball, another larger tray to put the tray of sand into. Diagram: Method: * Clamp the ruler up so the 0cm end of the ruler is level with the surface of the sand. * Look at the ruler and find the correct height measurement at which you are required to drop the ball from. * Line the bottom...

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