Soda bottle rocket Post 3

Questions
The maximum amount of force that can be created from 200ml of vinegar is roughly 500N. Careers that would involve this sort of experimentation would be military or civilian rocket programs. If military, than a weapons engineer perhaps and if civilian than an aerospace engineer. These engineers would have to use a test like this in order to find out how much force can be created from a given amount of fuel so they can calculate how much fuel they need to put on the rocket. More fuel than necessary, and the rocket will weigh to much. Too little fuel will result in failure to reach destination. Another use of this type of experimentation is a gun manufacturer. While most calibers are already laid out, those that invented them had to find out how much force a given amount of gunpowder would exert on the projectile and find the point where weight gained is not lowering the speed and accuracy even though there is slight force gain. In other words, they had to find out when they start getting diminishing returns in terms of weight to force of the bullet.
1. Newton's third law states that for every action there is an equal and opposite reaction. For example, a rocket launch. Force of rocket engine going down pushes rocket up
2. Recoil is a good example of Newton's Third law because the original action would be gunpowder ignition pushing the projectile out and the reaction is the force backwards or the recoil
3. You don't observe Ping-Pong paddle recoil because the paddle is a lot bigger and has a higher normal force than the Ping-Pong ball plus your holding it so the force travels throughout your body
4. Because F=ma, F1=12*2.5 And if F1=F2, 30=4*a, acceleration of the 4kg object is 7.5 m/s/s