Repeat Exercise 29 for a man 6 feet tall walking at a rate of 5 feet per second toward a light that is 20 feet above the ground (see figure).

Data from in Exercises 29

A man 6 feet tall walks at a rate of 5 feet per second away from a light that is 15 feet above the ground.
(a) When he is 10 feet from the base of the light, at what rate is the tip of his shadow moving?
(b) When he is 10 feet from the base of the light, at what rate is the length of his shadow changing?

y 20 16- 12 4 8 12 +x 16 20