Worksheet #7: Chapter 3 Review Worksheet

Physics I

Worksheet #7: Chapter 3 Review Worksheet

Projectile Motion

You’ll need to know what each of the following variables means. On the line, right what is meant by each variable:

Symbol Meaning

1.  X0 ______

2.  X ______

3.  Y0 ______

4.  Y ______

5.  Vx0 ______

6.  Vy0 ______

7.  t ______

8.  g ______

You’ll also need to know all of the important equations:

Equation / X version
(for a projectile ax = 0 / Y version
(for a projectile ay = g)
v = v0 + at
Distance Equation
No Time Given
(Maximum Height)
Range Equation

For your test, you will need to be able to solve each problem completely by drawing a picture and then using the correct formulas.

1. A child playing hop scotch leaves the ground at a 55° angle and travels a range of 1.5 meters. What was the child’s initial velocity? (Range Equation)

Diagram / Known / Wanted / Equation(s)
Solution

2. The pilot of an airplane traveling 150 m/s wants to drop supplies to flood victims isolated on a patch of land 285 m below. The supplies should be dropped how many seconds before the plane is directly overhead? (Y equation)

Diagram / Known / Wanted / Equation(s)
Solution

3. A bow and arrow is aimed directly at a target that is 42 m. If the arrow is released at a speed of 50 m/s, how far below the target will the arrow land? (X and Y equations)

Diagram / Known / Wanted / Equation(s)
Solution

4. A ball is thrown horizontally from the roof of a building 25.0 m tall and lands 16.0 m from the base. What was the ball’s initial speed? (X and Y equations)

Diagram / Known / Wanted / Equation(s)
Solution

5. A soccer ball is kicked at ground level with a speed of 22.0 m/s at an angle of 35° to the horizontal. How far away does it hit the ground? (X and Y equations)

Diagram / Known / Wanted / Equation(s)
Solution

6. A ball thrown at 27 m/s at an angle of 40°. Assuming the initial height is zero, how high will it go? (Maximum Height Equation)

Diagram / Known / Wanted / Equation(s)
Solution