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- hit one target within a 0.1 m radius of a target that is 1 m away horizontally from the base of the model catapult.

- hit one target within a 0.2 m radius of a target that is 2 m away horizontally from the base of the model catapult.

- was built with no more than 20$ NZ.

- there is no restriction on the weigh or size of the projectile or catapult

- the catapult doesn't need to be a traditional catapult, you just have to be able to tabulate the effect of different launch angles OR! initial launch velocity on the horizontal displacement of the projectiles.

If anyone can recommend any books or website to look at for my design, that would be appreciated. The report is due in 24 days so I would like to have a working prototype by 14 days (8/04/2017) from now, at the lattest.

Your's sincerely Buggsy