Class Response Science Blog #2

Recently in Science class we have been building roller coasters out of everyday supplies such as soda bottles, cardboard boxes, and paper towel rolls. Then we would see if a marble could get all the way through the roller coaster. These roller coasters displayed friction, force, and Newton's three laws of motion. Friction slowed down the marble as it was progressing through the roller coaster because friction is when the imperfections and ridges on objects rub against each other causing the objects to slow down. The marble used force as it was being pushed down the roller coaster because force is a push or a pull. Newton's first law of motion is shown on my roller coaster because the car keeps moving until it is slowed down by friction and then finally stopped at the end of the roller coaster. This is because Newton's first law of motion says that an object in motion will stay in motion and an object at rest will stay at rest until an unbalanced force is acted upon it. According to Newton's first law of motion the marble would have continued moving through the roller coaster forever had it not been acted upon by friction. Newton's second law of motion is shown on my roller coaster because the amount of force of the marble is equal to the the amount that the car accelerated times the mass of the marble. This is because Newton's second law of motion says that force equals mass times acceleration. Newton's third law of motion is shown on my roller coaster because the marble is exerting force on the roller coaster and the roller coaster is exerting force on the marble. This is because Newton's third law of motion says that for every action, there is an equal and opposite reaction. As you can see, my roller coaster is a perfect example of an easy way to display many elements of science.