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How do you do projectile motion problems with a horizontal launch?

posted Nov 26, 2017, 11:03 AM by Barbara Fortunato   [ updated Nov 28, 2017, 10:16 AM by Barbara Fortunato ]
5: T 11/28, 7: W 11/29

Last night, you learned about projectiles launched horizontally. You discovered that projectiles move at constant velocity in the horizontal direction where there’s no net external force, whereas they move with constant acceleration (g) in the vertical direction where the external force is due to gravity. (Air resistance is ignored.) In order to solve projectile motion problems, we often split the problem into x- and y-components, and then combine x & y with time. Today, you'll do some problems based on the videos you watched last night. 

Homework: Finish the problems assigned in class including Chapter 3 #44, 45, 46, 49, 50, 54 (assuming horizontal launch)  (Solutions) and Projectile Motion CompuSheets page 1
Answers to evens:
44. a) 0.64s, b) 0.64m 
46. 6.4m
50. a) Ball B collides with ball A, b) 0.11m
54. 5.5m/s