Science Speed
In Science our class has been experimenting with newtons laws of physics, speed and acceleration. We started of the unit by talking about the basic laws of physics. That lead into an experiment where we launched mini cars on tracks and calculated the speeds. Know that we have finished that experiment we are going to start doing looking at inclines and slope. Newtons discoveries were very productive to people in modern day. These laws help engineers create new inventions.
Sir Isaac Newton discovered three laws of motion and one law of gravity. The first of motion is an object in motion stays in motion unless acted on by a negative force. Newton’s second law of motion is Mass times Acceleration equals force. The third and final law of motion is for every action this is equal and opposite reaction. Our class studied these laws and found real life examples of each law. For the third law we had Anthony and John sit in rolling chairs and when John pushed Anthony forward Anthony went sliding forward and when they switched and Anthony was pushing, he moved back instead of john moving forward. This happened because Johns mass was greater then Anthony mass so the force acting on John was much greater then the one acting on Anthony.
After our class finished learning about the laws of physics, we decided to apply the laws in an experiment. We launched hot wheels car with a car launcher on to a track then timed how long it took each time. It was very hard and practically impossible for us to get exact consistent measurements. The floor in the science room was very weight sensitive. So if someone or something was to the close to the track it would make the car fly off the track. Making sure you were stopping the timer at the exact time the car came off the track was very difficult too. Once we got six times that were semi accurate you would average them out then divide that with the length of the track to get inches per second. You would take that number and turn it into miles per hour. My car’s final speed was 6.39 miles per hour.
