I class today my teacher was talking about gravitational acceleration. He said that if a ball is lunched into the air and it falls back down to a point level with the origin that the time it took to go from start to the highest point was about the same as the time it took to go from the highest point back down. He went on to say that because of the air it would go from start to hidgest faster then it would go from highest back down. I thought about it and it didn't make sense. When I asked him in class he didn't have a answer for me other than the air caused the slow down on the return part.
He also said that friction with air causes matter to heat up when falling to earth. I approched him and said it was air compressing in front of the object. He said no it was friction and I brought in a print out I got from Bad Astronomy. He retracted what he said and said we're both right and couldn't understand way the paper said friction didn't have a factor. He asked me why I belived some web site over him and I told him he doesn't have nearly as many people scrutinizing him as Bad Astronomy does.
Does anybody have a good argument that he will believe.