A small vertical mirrorhangs on the wall, 1.40 m above the floor. Sunlight strikes themirror, and the reflected beam forms a spot on the floor 2.50 mfrom the wall. Later in the day, you notice that the spot has movedto a point 3.75 m from the wall.
(a) Were your two observations make in the morning or in theafternoon? Explain.
(b) What was the change in the Sun's angle of elevation betweenyour two observations?