Documents you may need:
Range of Projectile Lab (pdf or doc)
Range of Projectile ALTERNATE Lab (pdf or google doc)
PhET Projectile Lab Simulation (pdf or doc)
To prepare for Angled projectiles, here is a Study Guide (pdf) for Horizontally Shot and Angled Projectiles.
Extra Practice: Projectile Practice worksheet (pdf or doc) (hints below)
1. Its a vertically shot projectile. Given that initial velocity and the fact that you know what the final velocity at the top is and you know what pulls it down, you can solve for the maximum height using the green equation. (<3)
2. Its a horizontally shot projectile. Since you know its horizontally shot its going to ask like it was dropped in the y-direction. Use the purple equation to solve for the time. (<0.5) With that time, use the blue equation to solve for the horizontal velocity. (<2)
3. Its an angle projectile. First, solve for the initial velocity in both directions. (a) With that initial vertical velocity, solve for the maximum height using the green equation. (0.2) (b) Solve for the time, you can use many equations to solve for time. (0.4) (c) With the time for the whole flight and the initial horizontal velocity you solved for in the beginning, solve for the range
Homework Hints:
pg. 150# (skip part c), 3 and pg. 164 #52
1.a) You have enough information in the y-direction to solve for time. You know that if it was horizontally shot the initial velocity in the y-direction was zero; and you know gravity is pulling it down. Knowing how far it fell (-78.4m) you can use the purple equation to solve for the time. (<5)
b) Using that time and the initial horizontal velocity you can solve for the range using the blue equation. (~20)
2. Since you know how far it fell, that if it was horizontally shot so the initial velocity in the y-direction was zero, and you know gravity is pulling it down, use the purple equation to solve for the time. (0.5) Now that you have the time and the range or displacement in the x, you can solve for the initial horizontal velocity using the blue equation. (>1)
52. a) You have enough information in the y-direction to solve for time. You know that if it was horizontally shot the initial velocity in the y-direction was zero; and you know gravity is pulling it down. Knowing how far it fell (-1.225m) you can use the purple equation to solve for the time. (<1)
b) Given this time and the range or displacement in the x, you can solve for the initial horizontal velocity using the blue equation. (<1)
pg. 164 #53, 58, 59
53. This is a horizontally launched projectile. Use the purple equation and the given y-direction information to solve for the time (>0.5)
Given that speed in meters per second and the time you found to solve for the range using the blue equation. (<5)
58. This is a horizontally launched projectile. (a) Use the purple equation and the given y-direction information to solve for the time (>14)
(b) Convert the 125 km/hr to m/s. Given that speed in meters per second and the time you found in (a) to solve for the range using the blue equation. (<500)
59. This is a horizontally launched projectile. (a) Use the purple equation and the given y-direction information to solve for the time (<4)
(b) Given that horizontal displacement and the time you found in (a) solve for the velocity using the blue equation. (<7)