CANNON!

To make the best cannon, it's back to the projectile moetion problems, cannon is highly related to the projectile motion. To make a better cannon, we should have a good angle and the inside of the cannon should have less friction, so the deceleration would be less. Although we are not using the gunpowder in our experiment, but we could use alcohol so the power would be less and it would be more safe to do the experiment. In this experiment, the force that's acting on our cannon ball would apply to Newton's first law and it might travel 1~ 4m. As there a velocity on the cannon ball causes by the cannon, it would turn up to be the concert of projectile motion. Best way to make the angle of the cannon is between 40 to 50 degree.