Amouse is running at a high speed between the kitchen and storeroom, situated along the same line in a building. a boy observes the mouse picking up pieces of bread from the kitchen and leaving them in a box in the storeroom. the boy observes the positions of the mouse after fixed intervals. he finds that the mouse travels the same displacement of 2.0 m in every half second. starting from the door of the kitchen, the mouse reaches the door of the storeroom in 3.0 s.
on a separte sheet of paper:

a. make a position-time table for the motion of the mouse from the kitchen to the storeroom.

b. draw the particle model of this motion.

c. convert this model into the corresponding position-time graph.

in the box below indicate how far the mouse traveled from the kitchen to the storeroom and describe the shape of your position-time graph.

People with normal vision cannot focus their eyes underwater if they aren't wearing a face mask or goggles and there is water in contact with their eyes. in a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina.with the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 2.05cm in front of the eye.)