Changing Velocity
The graph represents the position of a bungee jumper as a function of time.
Constantly changing velocity
Study how the average velocity changes as you move the points.
When is the average velocity negative?
As the points approaches each other, the time interval decreases. As a result, the average velocity approaches the instantaneous velocity at the point of intersection.
At which points does the direction of motion change? How does the change affect the sign of velocity?
Determine the maximum velocity.
When the velocity is zero? Is the acceleration zero at those points?