Progress Day #3
Today, the things that I already have are a complete bottle rocket, proportionality statements that I can describe, one graph that measures ml of water, distance (m), height (m). I also have included a sequence of steps and obviously include numbers that come from my results. I have thought of conducted more graphs today that include finding the distance, speed, and the velocity to illustrate my graph. My third day was a theory based day because everything was set to do. My rocket will hopefully be set so that I can test it tomorrow and find the results from there. Since one of my graph includes distance and time, I can find the velocity by distance divided by time. I can also use the 5 derived equations to find the unknown from my experiment.
With this information, I can find the force by multiplying mass by acceleration, which states in Newton's second law. This law explains how an object will change velocity if it is acted on by a force. Velocity is directly proportional to the force applied. If twice as much force is applied to an object is will travel twice as far. Also velocity is inversely proportional to mass. This means that the more an object weighs the more force is necessary to accelerate the object. Using the water rocket as an example the force needed to move the rocket off the launch pad is generated by pumping air into the rocket. The more air packed into the rocket the higher it will fly. Remember that the heavier an object is the more force required to generate velocity. The more water that is added to the rocket the heavier it is, and the more force that is needed to propel it forward.
Newton's third law also comes into play because for every action (force) there is an equal and opposite reaction (force). This statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The magnitude of the force acting on the first object equals the magnitude of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. When our rocket leaves the launch pad all of the air (force) that was pushed into the rocket hurls out of the nozzle - this force propels our rocket upward.
Newton's laws will all be helpful in this experiment because that's what it's all about. Tomorrow is the day where I launch my rocket with my results ready to collect. All I need is the data to plot my graph and to have proportionality statements matching my graph data. Everything else is not theory based like this section conducting a couple of graphs. Also, my goal for tomorrow is to achieve the maximum height possible.
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