6 Question 2 a = m/s – m/s a = ____ a = __________ s A skydiver accelerates from 20 m/s to 40 m/s in 2 seconds. What is the skydiver’s average acceleration?a = m/s – m/ssa = ____a = __________
7 Graphing Acceleration Can use 2 kinds of graphsSpeed vs. timeDistance vs. time
8 Graphing Acceleration: Speed vs. Time Graphs Speed is increasing with time = acceleratingLine is straight = acceleration is constant
9 Graphing Acceleration: Speed vs. Time Graphs Rise = 4 m/sRun = 2 sIn Speed vs. Time graphs:Acceleration = Rise/Run= 4 m/s ÷ 2 s = ________
10 Graphing Acceleration: Distance vs. Time Graphs Curved line means the object is accelerating.Your speed is increasing. Remember slope = speed.
11 Question 3 How is the speed of the car changing? Run = 3 sRise = -6 m/sHow is the speed of the car changing?(speeding up, slowing down, or staying the same)__________________________2) What is this car’s acceleration?__________
12 Question 4Which line(s) represents an object that is accelerating? ________________________________Which line(s) show positive acceleration?________________________________3) Which line(s) show negative acceleration?4) Which line(s) show constant acceleration?_________________________________