You test a machine and find that it exerts a force of 5 N for each 2 N of force you exert operating the machine. What is the actual mechanical advantage of the machine? ill mark brainliest :)

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?