1. Velocity-Time Graphs

2. The slope of a velocity-time graph represents acceleration. A positive slope – positive acceleration Negative slope – negative acceleration or acceleration in the opposite direction Zero slope – velocity is not changing(constant)

3. Constant Velocity Velocity m/s [N] Time (s) There is no slope, therefore, no acceleration

4. Describe the Motion Positive Acceleration 0 velocity for 10 s At 10 s started uniform acceleration to 60m/s [N] At 40s maintain constant velocity of 60 m/s [N] Time (s) Velocity m/s [N]

5. Describe the Motion Negative Acceleration Moving at a constant velocity of 60m/s [N] for 10 s At 10 s started uniform negative acceleration to 0m/s [N] Velocity m/s [N] Time (s)

6. Assignment Pg. 456 # 1-9 For marks Tomorrow!!!!!!