In a physics class demonstration, a ball is dropped from the roof of a building, 72 feet above the ground. The height h, in feet, of the ball above the ground is given by the function h= − 16t^2+ 72 where t is the time in seconds. How long does it take for the ball to reach the ground?

Will give are given that xy is parallel to zw. if xz is a transversal that intercepts xy and zw, angle angle alternate interior angles. since xy is parallel to zw, we know that these angles are we also know that angle xvy and angle zvw are , and thus congruent. we can conclude that △xyv ~ △zwv using the similarity theorem.

Find the solution of each of the following.

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?