Sunday, November 27, 2011

Blog #14

#EGGdrop! This week in physics we studied more about momentum and impulse. This time we needed to save the life of an egg. Chayse, Chelsey, and I used physics and modern technology to create a device to prevent the egg from cracking on impact. This next level egg-saving apparatus was made from modern technology including straws, paper and napkins/tissue. This apparatus was made in the shape of a cone with straws sticking through it and napkins/tissue filling the interior. The cone, with coins on the the tip, was made in this shape so it would fall on the nose and collapse. This part of the apparatus was designed to be destroyed in order to increase the time of contact between the ground and the egg. The napkins/tissue were used to cushion the egg within the cone to give it extra protection. The straws were used to keep the egg in the cone as well as to prevent the cone from landing flat on its side. This apparatus worked perfectly as you see in the video above. Next level Coned-shaped-egg-saving apparatus... smart!

Blog #13

          WATER BALLOON TOSS! This week in physics we learned more about momentum and impulse. We studied this by tossing water balloons across Konia field. It is possible to catch a water balloon without popping it because it absorbs most of the force from when it is caught. If this force is too great than the balloon pops and makes the catcher all wet. In order to prevent the balloon from popping you need to increase the time of contact. This decreases the impulse, the change of momentum, so that it is not too great that it would cause the balloon to experience a great amount of force thus popping it. Chayse and I were partners for this water balloon toss across Konia. We won the toss because we understood and used momentum and impulse to our advantage. SO... if you ever have a water balloon toss just remember your physics and decrease the impulse.

Sunday, November 13, 2011

Blog #12

In this week of physics we focused on the changing of momentum through collisions. We experimented with cars on a frictionless track. We tested to see if mass affects momentum. When a bigger car hits a small car, the bigger car will have more momentum thus pushing both cars in the direction that the big car was going. The big car has more momentum because it has more mass.
       A KC-135 (re fueler plane) is a very large plane. It also contains a lot of jet fuel. This plane has a large mass. These planes refuel smaller planes, more specifically jets. Jets are very small and light. They have a very small mass. When these two planes meet in the sky they connect so they can transfer fuel. If the jet approaches the KC-135 too fast then it will crash into the back of the KC-135. The KC-135 would theoretically have a change in momentum because the jets momentum was transferred into the big plane. In actuality the planes would both crash.
     This picture shows the KC-135 refueling the Jet when both are going at the same uniform velocity. Its like the the cars in class when they are connected by the velcro. Same velocity and same momentum. (Click the picture to make it larger)

Blog #11

A new unit of Physics! So exciting. This new unit of physics that we are learning has to do with momentum. Momentum is a mass with a velocity. So in order to find an objects momentum you must multiply the mass of the object by its velocity. The equation looks like this P=mv. P stands for momentum, m stands for mass and v stands for velocity. Momentum is a part of Newton's first law. (An object in motion tends to stay in motion unless changed by an outside force) The point of this blog is to show physics in the real world and write about it. Well, momentum can be seen in the real world through everything that moves. Everything on earth has a mass and if it moves then it has velocity. Thus if it is a mass that is moving then it has momentum. The picture above shows momentum. After letting go of the rope i can no longer accelerate on the board. So I glide upon the water due to momentum until I hit the dock.