9-24

 ** The Physics Journalist** By Lindsay Bennett Today’s objectives were to look at some TPJ examples from past students, Go over Galileo and his law, watch Mr. Manning do some examples that demonstrate that law on inertia, and watch a Julius Summer Miller video. We got a handout on Newton’s First Law (Unit 2, page 8), and on the back is tonight’s homework, 1st Law Questions: Physics 1 (page 9) that is due Wednesday the 23rd.

Newton’s law is actually what Galileo discovered but does not get credit for, it states that every particle remains in a state of rest or continues in a state of motion with constant speed in a straight line unless compelled by an unbalanced force to change that state. Basically, if a body wants to stay still it will.

We also discussed __**inertia**,__ which is an objects resist to change in motion. Mr. Manning showed us a number of demonstrations to show us how inertia works. These demonstrations show that mass=inertia, the more mass an object has the more inertia it has and the faster it will fall. The video we watched summed up all of the things we saw in class and restated the law that particles stay in static equilibrium or continue in a dynamic equilibrium unless compelled by an unbalanced force to change that state.
 * 1) He placed a beaker filled with water over a piece of paper and placed it at the edge of the table, pulled it and the beaker stayed on the table because its inertia held it on the table.
 * 2) He put a small hoola hoop like object on top of a vase and then put a marker on the top of that. He pulled out the hoola hoop from the inside of it and the marker fell into the vase, because of its inertia which held it in the air for a very short amount of time, allowing it to fall into the vase.
 * 3) Mr. Manning had a very sharp knife and cut through a banana as he dropped it. Once again the inertia held it in the air where he dropped it from for a very short amount of time allowing it to be cut in half in a split second.
 * 4) The last one was when he blew up a balloon and put it onto a disk which moved on a layer of air without force, just air. Giving it force would change the speed or direction.