Question:

Directions: Analyze and answer the following problems. 1. While the teacher is gone, Makoy went in front and jumped from top of the table. If he free falls for 2.6 seconds. a) What will be his final velocity? b) How far did he fall? 2. A stone is dropped into a deep well and is heard to hit the water 3.41 s after being dropped. Determine the depth of the well.\fUAM: Vertical Dimension The observation deck of tall skyscraper is 370 m above the Determine the time required for a penny to free fall from the the street below. Given: v = 0 m/s d = 370 m a =-9.8 m/s2 Find: t = ? Formula: d = vit + %% at? Substitute: - 370 m = (0 m/s)(t)+ 0.5(-9.8 m/s?)(t)2 - 370 m = 0+ (- 4.9 m/s?)(t)2 - 370 m = 0+ (-4.9 m/s2)(t)2 - 4.9 m/s2 - 4.9 m/s -370 m =t? 4.9 m/s 75.5 52 = t2 t = 8.69 sUAM: Vertical Dimension Zed is playing with a ball on top of a building but the ball fell and hit the ground after 2.6 seconds. b) How high is the building? Given: a, = -9.8 m/s2 assume v = 0m/s t = 2.6s Find: d = ? Formula: d = vit + 1/2 at2 Substitute: d = (0 m/s)(2.6 s)+ (0.5) (-9.8 m/s?)(2.6s)2 d = (0 m/s?) + (0.5) (-9.8 m/s?)(6.76s) d =-33.12 m