321 fire

Best angle:
the best angle would be 45 degree to insure the maximum hang-time


Tight Sealing:
The cans has to be tape securely because of the potential danger of the fuel escaping thus fire then a footprint.

Mass of the base:
The mass of the base has to be as heavy as possible, because the force from the launch will have a opposite reaction (newton's 3rd law). it would be the best interest of our future if we do not misfire and hit someone.

Up Down then a Loop, its a rollercoaster

In kinematics, we learn about the displacement, velocity, and acceleration. All of these variables help measure/find the distance, speed and acceleration of a object aka the roller coaster.
  
However also take in to conclusion Newton's 3 laws

Newton's first law: All objects will remain in a state of rest or continue to move with a constant velocity unless acted upon by an unbalanced force.

Newton's second law: The acceleration of an object depends inversely on its mass and directly on the unbalanced force applied to it.

Newton's third law:  For every action force, there is an equal and opposite reaction force. 

2 of the coolest coasters are ( I wish to ride them one day)

Underwater Roller Coaster

Vanish roller coaster at Cosmo Land in Japan unexpectedly dives into an underwater tunnel.

Kingda Ka Roller Coaster

Located at Six Flags Great Adventure in New Jersey, it is the tallest and fastest roller coaster in the world. The train is launched by a hydraulic launch mechanism to 128 miles per hour (206 km/h) in 3.5 seconds.

vectors (but its not for math)

thing you need to know for solving vectors

When going in one direction then going to the opposite cancels each other. 

Example: you walk 5 m north then you walk 10 m south : position your 5m south

Wait wait wait that happen when you walk diagonally (basically a shortcut), think this through for a shortcut there has to be a long way right. that "shortcut" is the hypotenuse of a x and y

then is just simple SquareRoot (x2+y2)

find the adj and opp

adj = hyp*cosAngle

opp = hyp*sinAngle

opp & adj is similar to x & y

Find the hypotenuse then it angle would be opp/adj tan-1  or adj/opp tan-1