so apparently, this problem usually would require, many hours, and quite a few pages to write a proof for this, but today, i was shown a way to solve it in only a few mintues with only a few steps...
an object of mass m collides elastically with a second object of equal mass initially at...
ahh I am completely lost now i tried to isolate teh unknwon (t) from the rest of the problem and got t= the square root of 2(delta y)/-g
but the book says that is only for when delta y is negative. can someone explian this problem to me step by step? I am reallly confused.
okay so here's the problem..
the fastest recored pitch in MLB was thrown by nolan ryan in 1974. if this pitch were thrown horizontally, the ball would fall 0.809 m by the time it reached the home plate, 18.3 m away. how fast was this pitch?
the book suggests the equation
delta y =...