. What is the kinetic energy of a 10 kg car that is moving 4 m/s?

i belive the answer is E = 1/2 mv^2

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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.