We reviewed yesterday's lesson again. It was on collisions. So, either elastic collision or inelastic collision.
Elastic collision- there is no change in kinetic energy after the collision has occured.
Inelastic collision- where some energy is 'lost' when colliding objects are in contact.
Mr. Banow showed us a whicked example of inelastic collision using two steel balls and a piece of paper.
First, he put one of the balls in the middle of a roll of tape and put the piece of paper on top of the ball. Next, he took the second ball and dropped it so it would hit the ball below the piece of paper.
What happened you may ask?
Well, a little hole was burnt into the piece of paper as well as a 'clunk' sound when the balls hit was made.
The reason why the collision of the two steel balls was inelastic because their was energy lost in the form of heat and/or sound. Not all of the energy was being conserved as kinetic energy.
We then did questions 1-4 on page 290.
Ryan Fly is up next.
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