1. 1.6
Acceleration Due
to Gravity

2. Projectile motion is motion in a vertical plane.
A projectile, regardless of its mass, will always fall downward at the acceleration due to gravity.
= m/s2
5:09
2:26

3. The ball slows down as it rises. The ball stops at the maximum height.
1:58
The ball slows down as it rises.
The ball stops at the maximum height.
The ball speeds up as it falls back down.

4. A Graphical Representation of a Vertical Projectile
Positive slope indicates positive velocity [up].
The slope is decreasing (getting less positive), indicating that the object is slowing down.
Negative slope indicates negative velocity [down].
The slope is increasing in magnitude (getting more negative), indicating that the object is speeding up.

5. The position-time graph of a vertical projectile is a parabola.

6. The velocity time graph would have a constant slope of –9.81 m/s2.
The slopes of the tangents on the position-time graph give us values of instantaneous velocity.
The velocity time graph would have a constant slope of –9.81 m/s2.
3:17

7. Homework: read pages 54 – 62 Practice Problems pgs. 59, 60
1.6 Check and Reflect
pg. 63 #’s 1 – 15