1. The problem statement, all variables and given/known data A ball is thrown vertically downward with a velocity of 30 ft from the top of a building. Find a.)What it's speed will be after falling 2 seconds b.)How far it will fall in 2 seconds c.)What will be its velocity after 30 ft d.)If the ball was released at 120 ft above the ground, in how many seconds will it strike the ground. 2. Relevant equations For a I used the equation Vy = Vyo - gt For b I used the equation ΔY=Vyo(t) - 1/2gt^2 For c I used the equation ΔY=Vyo(t) - 1/2gt^2 in order to find t, or the time it takes to move 30 ft and I got .72 s. Then I put that into the first equation of Vy=Vyo - gt. For d I used ΔY=Vyo(t) - 1/2gt^2. 3. The attempt at a solution For a I got -94 ft/s. For b I got -124 ft/s. For c I got 53.04 ft/s. For d I got 2.74 seconds I have a few questions. First, can someone check if these answers are correct? My professor did not provide an answer sheet for the exam review. Also I was only able to get a proper answer for d if I made the 120 ft negative. If the ball was released at 120 ft above the ground wouldn't it be positive? Also, c gave me some trouble, if it is incorrect, could someone please provide an in-depth explanation? Thank you so much.