Recent content by davidw9

wow. i feel stupid. i finally got it. t=.6. thanks a lot.

i keep trying that with the x= v(t)+ 1/2a(t)^2 and keep getting really complicated relationships... ugh.

ahh, sorry. i know all of that. i know you are trying to find two equations that you can set equal to each other, i just can't figure out how to get to that point of setting them equal.

i really don't have much at all. I keep trying things that aren't working. I feel like there might should be an x and x-15 for displacement, but I don't know how to apply that.

Can someone please walk me through how to do this problem. I've been going at it for wat too long: A ball is thrown upward from the ground at an inital velocity of 25 m/s; at the same instant, a ball is dropped from rest from a building 15 m high. After how long will the balls be at the same...