Consider a Martian satellite in a circular orbit about Mars with an orbital radius of 15,000 km. It is desired to lower this satellite to a circular orbit of radius 8,000 km using a Hohmann Transfer. Calculate the total impulse required for this maneuver in m/s.

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?