A child travels down a water slide, leaving it with a velocity of 4.2 m/s horizontally as shown below. The child then experiences projectile motion, landing in a swimming pool 3.2 m below the slide. a) For how long is the child airborne?

b) Determine the child’s horizontal displacement while in the air.

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?