(2 billiards balls)
Using Physics principals, and using as few steps as possible.
2006-11-01 10:13:43 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Physics
o.k. neglect the situation in which one ball is hit straight into the other.
It IS true for all others, but how do i prove it?
2006-11-01 10:17:54 · update #1
also neglect spin. thanks.
2006-11-01 10:33:38 · update #2
Well, the way the balls collide, the ball that is being hit always goes in the direction that is perpendicular to the tangent between the two balls at contact. And you know that it is an elastic collision, and that momentum is conserved, so once you know the direction of one ball, you can figure out the direction of the other ball, and prove that their paths create a 90 degree angle (other then head on collisions). Hope this helps.
2006-11-01 10:43:52 · answer #1 · answered by Anonymous · 0⤊ 0⤋
It isn't always true. It really depends on the spin of the ball colliding (usually white ball), and the angle of collision.
The 90 degree rule only works when you stun the object ball (ie. the white ball is still skidding when it collides with the object ball) If the angle of collision is small and the white ball is rolling forward (ie hitting the top of the white ball), the angle after collision may be <90 degress. Usually around 30 degress only.
2006-11-01 10:29:19 · answer #2 · answered by Wei_hao 2 · 0⤊ 0⤋
you forgot to factor in the bumpers and the possibility of the balls colliding twice you cannot make an angle with two points i think you are trying to say that when you hit two billiard balls that they always make a straight line but there is always a straight line between two points unless you are talking about a parabola which i am not going to explain because i hate quadratic formulas
2006-11-01 10:51:30 · answer #3 · answered by neun_und_sectzig 2 · 0⤊ 1⤋
I don't think it is. If I hit one ball straight at another, and the second ball goes in a straight line, how is that 90 degrees?
2006-11-01 10:15:54 · answer #4 · answered by dantheman_028 4 · 0⤊ 0⤋
Well a lot of soundtracks make me sad like the soundtrack of Rogue Assassin(War). Then Assassin's Creed Revelations soundtrack which is the first link. And a lot but can't really remember
2016-05-23 06:00:39 · answer #5 · answered by Anonymous · 0⤊ 0⤋
You would use the fact that momentum and energy are conserved. Schaums series on physics proves what you are asking in its momentum section.
2006-11-01 10:23:07 · answer #6 · answered by bruinfan 7 · 2⤊ 0⤋
Like this
a=b, b=c so c = 90 degrees.
2006-11-01 10:17:30 · answer #7 · answered by Anonymous · 0⤊ 4⤋