Aquantitative description of kinematics involves using th describe the motion

Which of the following is an example of motion in two dimensions?

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.