Please help with math, will give brainliest, thanks, and 5 stars

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

The volume of a box varies directly with its length if a box in the group has a length of 30inches and k=24 what is its volume

Given the diagram below, michael writes, "segment ac is congruent to segment ac." which of the following reasons allow him to write this statement?