Activity 4.3: Rectillnear Motion 1. Solve the following problems. For Items 1-2: Use the position function 3(t} = 1t2 + vut+ 5.} for free - fa] ling objects. 1. A silver dollar is dropped from the top of a building that is 1362 feet tall. a. Determine the velocity function for the coin. b. Find the instantaneous velocities when t = 1 and t = 2. c. Find the time required for the coin to reach ground level. d. Find the velocity ofthe coin at impact. 2. A ball is thrown straight down from the top of a 220 foot building with an initial velocity of -22 feet per second. a. What is its velocity after 3 seconds? b. What is its velocity after falling IDS feet? For Items 3-4: Use the position function HR} = \"Hit: + not + $0 for free - falling objects. 3. A projectile is shot upward from the surface ofthe Earth with an initial velocity of 121) meters per second. a. What is its velocity after 5 seconds? I). What is its velocity after 10 seconds? 4-. To estimate the height of a building. a stone is dropped from the top of the building into a pool of water at ground level. How high is the building if the splash is seen 5.6 seconds after the stone is dropped