A 5 kg green ball moving at 2 m/s to the right collides with a 2 kg white ball moving 1 m/s to the right. After the collision the white ball moves at 3 m/s to the right. What is the velocity of the green ball after the collision?

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.