elastic collision 2 dimension unequal masses not at rest


by grrrphysics
Tags: elastic, elastic collision, unequal mass
grrrphysics
grrrphysics is offline
#1
Nov9-08, 04:11 PM
P: 1
Please help! i know how to do a elastic collisions in 1 dimension, but the 2D is too confusing...here is my problem:

You have a blue ball with a mass of 1.5 kg moving with a speed of 4.5 m/s in a direction below the positive x-axis. You have a red ball with a mass of 3.6 kg moving with a speed of 2.7 m/s in a direction to the left of the negative y-axis. When the balls collide, find the final velocity (magnitude and direction) for each of the two balls.
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Jennifer001
Jennifer001 is offline
#2
Nov9-08, 06:15 PM
P: 22
Quote Quote by grrrphysics View Post
Please help! i know how to do a elastic collisions in 1 dimension, but the 2D is too confusing...here is my problem:

You have a blue ball with a mass of 1.5 kg moving with a speed of 4.5 m/s in a direction below the positive x-axis. You have a red ball with a mass of 3.6 kg moving with a speed of 2.7 m/s in a direction to the left of the negative y-axis. When the balls collide, find the final velocity (magnitude and direction) for each of the two balls.
simple way to solve this is by using galilean transformation equations and turn one of the balls into a stationary one and just use the 1D formulas
asleight
asleight is offline
#3
Nov9-08, 06:20 PM
P: 154
Quote Quote by grrrphysics View Post
Please help! i know how to do a elastic collisions in 1 dimension, but the 2D is too confusing...here is my problem:

You have a blue ball with a mass of 1.5 kg moving with a speed of 4.5 m/s in a direction below the positive x-axis. You have a red ball with a mass of 3.6 kg moving with a speed of 2.7 m/s in a direction to the left of the negative y-axis. When the balls collide, find the final velocity (magnitude and direction) for each of the two balls.
Conservation of momentum holds in both the x- and y-directions.


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