A scientific satellite of a mass 1300 kg orbits mars 200 km above its surface. if Mars has a radius of 3396 km what is the force of gravity acting on the scientific satellite

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?