Object a with a mass of 1.5 kilograms is moving with a velocity of +11.2 meters/second (moving in the +x direction). it has a perfectly elastic collision with stationary object b that has a mass of 4.5 kilograms. after the collision, object b travels with a velocity of +5.6 meters/second. what is the final velocity for object a?

because it says use -2,0,and 2 for x, we can plug those numbers into the equation. y/4=3/4(-2)+2   y/4= -1 1/2 +2 now to get x by itself, we can multiply each side by 4. y=-6+8 which equals y=2 when x=-2. now you can do the same thing with 0 and 2 as x. you get y=8 when x=0 and y=14 when x=2.

x   |   y

-2 |   2

0   |   8

2   |   14

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up