Conceptual Physics Notes on Chapter 3 Motion in

Conceptual Physics Notes on Chapter 3 Motion in Two Directions

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

Projectile Motion n Vector Addition + – A arrow is used to represent the magnitude and direction of a vector n A velocity is sometimes a result of the addition or subtraction of vector quantities

Projectile Motion Components of Vectors n n 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

Projectile Motion n Construct parallelogram to find the RESULTANT See diagrams drawn on board

Projectile Motion n Any projectile has both vertical and horizontal components. This path a projectile follows is a parabola.

Projectile Motion – Horizontal component of velocity stays constant – Vertical component of velocity has gravity acting on it -- so it changes in it’s path.

Projectile Motion n 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

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

Projectile Motion Monkey & Hunter Demo