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Find out the difference in flight time, of a weighted paper helicopter, on comparison to a mass of blue tack with equivalent mass.  

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Paper helicopters and a circular ball of same mass Aim I am trying to find out the difference in flight time, of a weighted paper helicopter, on comparison to a mass of blue tack with equivalent mass. Variables Things that could be investigated are: * Wing span - which would effect the air resistance of the helicopter * Mass attached to helicopter * Wing area * Increase the mass of the helicopter by adding more paper clips - which I predict would effect the rate of which the helicopter would fall. Measurement and different interpretation of these variables could be made for example, increasing the amount of mass then compare it with air resistance by timing a piece of blue tact of same mass. Hypothesis What I predict will happen is, as the mass of the blue tact is increased the speed in which it falls will be increased too. Also I predict that as the mass of paperclips are...

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