How to check pressure?

Question

I made a potato gun. I want to check out how far it shoots. What formula should I use to check the distance?

Answer 1

d =v_i (t) + (1/2)(a)(t^2)

d is distance

v_i is the initial velocity = 0 in your case

a is acceleration

t tis time

You need to shoot it straight up and figure out the amount of time is spends in the air then use that.

If you know the pressure in the gun, use Force (probably have to convert psi to Newtons)=mass*acceleration and solve for acceleration.

Edit: Oops, forgot to take the angle into account.

d =v_i (t) + (1/2)(a)(t^2)*cos(angle fired at) for the x direction

and use sin(angle) for distance vertically