Conceptual Physics

1
Conceptual Physics

• Notes on Chapter 3
• Motion in
• Two Directions

2
Projectile Motion

• Vector and Scalar Quantities
• Scalar
• Scalar is just a number --- stand on a scale,
  it just tells you your weight
• Vector
• Vector is a number with a direction.

3
Projectile Motion

• Vector Addition
• A arrow is used to represent the magnitude and
  direction of a vector
• A velocity is sometimes a result of the addition
  or subtraction of vector quantities

4
Projectile Motion

• Components of Vectors
• Any single vector can be resolved into two
  components
• Component vectors form right angles to each other
• a VERTICAL component of the velocity
• a HORIZONTAL component of velocity

5
Projectile Motion

• Construct parallelogram to find the RESULTANT
• See diagrams drawn on board

6
Projectile Motion

• Any projectile has both vertical and horizontal
  components. This path a projectile follows is a
  parabola.

7
Projectile Motion

• Horizontal component of
• velocity stays constant
• Vertical component of velocity has gravity acting
  on it --- so it changes in its path.

8
Projectile Motion

• Ideal path and actual path of a projectile are
  different
• We look a ideal path NO air resistance
• If ideal --- then time up equals time down
  velocity up equals velocity down

9
Projectile Motion

• Ideal Angle?
• Pg 36 what angle gives me the best distance
• Max horizontal and vertical components
• 75" 15"
• 60" 30"
• 45"
• 90" 0"

10
Projectile Motion

• Monkey Hunter Demo