Look at the link below to see how far your car can go down a ramp! What works best ... a heavy weight? A large parachute? Why? Make sure you complete the table!
http://www.bbc.co.uk/schools/scienceclips/ages/10_11/forces_action.shtml
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http://www.bbc.co.uk/schools/scienceclips/ages/10_11/forces_action.shtml
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