What is the algebraic expression for the speed vb of the lighter box as it reaches b? express your answer in terms the box's speed va at point a, the magnitude g of the acceleration due to gravity, and the heights, ha and hb, of the two points above the ground.

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

i think the answer is tomato juice? not entirely sure though

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray