A daring stunt woman sitting on a tree limb wishes to drop vertically onto a horse gallop-
ing under the tree. The constant speed of the
horse is 4.4 m/s, and the woman is initially
1.98 m above the level of the saddle.
How long is she in the air? The acceleration
of gravity is 9.8 m/s
Answer in units of s.

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.