1. Velocity-Time Graphs and Acceleration

2. What does a v-t graph look like? Time is marked on the horizontal axis and velocity is on the vertical. Graphs that represent an object’s velocity versus its time.

3. What can we determine from a velocity time graph? Velocity and speed Time Acceleration Displacement and distance

4. What can we determine from a velocity time graph? Velocity - reading directly off the y-axis

5. What can we determine from a velocity time graph? Time (read off the x-axis)

6. What can we determine from a velocity time graph? Displacement = area under the curve NOTE: Area formulas: –Area rectangle = length x width –Area triangle = ½ base x height

7. What can we determine from a velocity time graph? Acceleration = v/t = slope

8. What can you find from a v-t graph Acceleration = slope at a point on the graph (you may have to use a tangent) Average acceleration = finding the slope of a segment (use the start and end points)

9. Velocity-Time Graphs

10. Interpreting v-t graphs Horizontal lines show uniform motion (constant speed and direction). Inclined lines show change in speed or direction, or both: in other words accelerated motion.