1-D Kinematics - Free Fall and Gravity

Question 1

y axis

Answer 1

• moving up and down, vertical motion

- positive up, negative down

Question 2

gravity (g)

Answer 2

• accelerates objects downward, in the negative y direction
• 9.80 meters per second squared down (-9.80 m/s^2 downward)
• acceleration = -g

Question 3

solving free fall problems

Answer 3

• use delta y instead of delta x
• a = -g
• -9.80 m/s^2
• +v = rising
• -v = falling
• +deltay = gained height
• -deltay = lost height