Newton's Laws of Motion 2/4/18

https://upload.wikimedia.org/wikipedia/commons/1/16/Newton_3.jpg

Isaac Newton has created three laws to explain how forces make objects go in motion. Newton’s first law is known as the law of Inertia. This laws states that moving objects don’t spontaneously speed up, slow down, or change direction. An example of Newton’s first law is that if a bicycle is at rest, without force it is going to stay at rest. Newton’s second law states that force is the product of mass multiplied by acceleration. A more in depth definition of Newton's second law is in order to cause an object to accelerate, a force needs to be applied that is proportionate or larger than the mass of the object. This law also explains that the more force applied, the quicker the object accelerates. In addition the more mass there is in an object, the more force you need to apply in order to accelerate the object. An example of Newton’s second law is that if a bicycle is carrying a large amount of mass, the person pedaling will need to apply a large amount of force in order to make the bicycle accelerate. Newton’s third law is explained as, for every action, there is an equal and opposite reaction. An example of Newton’s third law is the action is when you drop a bouncy ball and it creates a downward force hitting the ground. The reaction is when the floor reacts by pushing the ball the same force but upward, causing the bouncy ball to bounce back up.

S&EP - SP3: Planning and carrying out investigations

I identified questions to be investigated when I asked how each short lab represented each of Isaac Newton's three laws of motion. For the second lab that tested Newton's second law for motion, I identified my variables and controls. The controlled variable were the length of the track, the height of the ramp, and the starting positions of each marble. The manipulated variables were the mass of the marbles. There was one smaller marble and one larger marble that would be tested. I designed and performed experiments to test my hypotheses for the second lab that represented Newton's second law. I thought that when we released the smaller marble with less mass down the ramp, it wouldn't make the larger marble go in motion when they came in contact, and proved the opposite. The smaller marble did make the larger marble move, however the acceleration was very slow because it wasn't enough force.