3. A bullet is shot horizontally off the top of a 35.0 m tall vertical cliff. If it lands 1.10 km away, at what speed was the bullet fired? Show all work. 4. A ball rolls off a roof with a horizontal velocity of 1.75 m/s. The ball lands 3.50 m from the edge of the building. How tall is the building? Show all work. /26 Assignment 4 Unit A Module 2, Lesson 3: Solving Projectile Problems Lesson 3 of this assignment is worth 11 marks. The value of each question is noted in the left margin in parentheses. 1. The Calgary Tower is 191 m tall. How long would it take a feather to drop to the ground from the top of the building (assume no air resistance)? Show all work. 2. A soccer ball is kicked horizontally off a 15.0 m tall roof with a velocity of 75.5 km/h. Assume no air resistance. a) How long is the ball in the air? Show all work. b) What is the distance from where the ball lands to the bottom of the building? Show all work. b) What is the horizontal displacement of the golf ball? Use the graph below for parts a-c. 10 Vertical Component of a Projectile's Velocity 80 Velocity (m/s) l\\) O o o 2 1 0 1 2 3 4 5 6 7'8 9 1011 1213 a) Using the graph, determine the acceleration of the object. Answer to two significant digits. 14 Unit A Module 2, Lesson 4: Projectiles in Two Dimensions Lesson 2 of this assignment is worth 15 marks. The value of each question is noted in the left margin in parentheses. 5. Use the information below to answer parts af. Show all your work including vector diagrams, formulas, etc. A soccer ball is kicked at an angle of 320 above the horizontal With an initial velocity of 25.0 m/s. a) Determine the horizontal component of the initial velocity. b) Determine the vertical component of the initial velocity. c) What is the ball's horizontal velocity at 2.00 s? d) What is the ball's vertical velocity at 2.00 s? e) What is the horizontal displacement at 2.00 s? (1) f) What is the vertical displacement at 2.00 s? (1) 6. Use the following information to answer parts ab. Assume air resistance is negligible and show all work. Tiger Woods' golf balls leave his club with an average speed of around 76.0 m/s. He hits a ball with an angle of 15.0 relative to the horizontal. a) How long is the golf ball in the air? (3) b) Does the acceleration ever become zero? If so, explain at what location during the motion this occurs and at what time on the graph. c) Does the vertical component of velocity ever become zero? If so, explain at what location during the motion this occurs and at what time on the graph. You're done! Once you've completed and checked all of your solutions, submit all of Assignment 4 to the appropriate dropbox in Moodle