32) a bicyclist starts a timed race at 6.0 mi/h. in order to win, he must average 21 mi/h. assuming
constant acceleration from the start, how fast must he be traveling at the end of the race?
a) 24 mi/h
b) 36 mi/h
42 mi/h
d) 30 mi/h

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. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.

If the area of a square has increased by a factor of 16, by how much has each side increased?