Recent content by Cruncher

http://en.wikipedia.org/wiki/Twin_paradox I read a little bit about this, and am a little bit confused. I always learned about reference frames. When I jump, you can say that I am moving away from the earth, or the Earth is moving away from me. Why is this any different for near-light travel...

i have searched google, i can't get much that helps me or i don't understand what it means, if i make it a 1d problem along the collision axis, i guess i need to find how much momentum in that direction, using triangles i assume with x and y momentum, but what if both circles are moving the same...

Okay, i have a problem here with 2 dimensional elastic collision between 2 balls with equal mass, they are both moving in different directions before collision what i know: vx and vy of both balls, the slope of their movement, which can be converted to an angle with tan-1 x the problem is all...

it is not elastic, it is as though 2 billiard balls hit each other.. do you know where i could find these equations? thanks Cruncher

Okay this is a question about after two balls collide knowing their speeds and directions and mass before collision, what is their speed and direction after collision in two dimensional space. more specifically i need to know this because i am programming a game in which i need accurate...