Eddie’s assignment is to prepare a dichotomous key for several objects. His first task was to arrange the objects. The objects are a lightning bug, a butterfly, a ladybug, an ant and a canary. What should each question in the dichotomous key accomplish?

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.

Am i correct on these two physics questions?