As seen from Earth, the Sun has an apparent magnitude of about 26.7. What is the apparent magnitude of the Sun as seen from Saturn, about 10 AU away? Remember that one AU is the distance from Earth to the Sun and that the brightness decreases as the inverse square of the distance. Would the Sun still be the brightest star in the sky?

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?