Acceleration in One Dimension
The puck moves toward the wall and bounces off, but now there is friction acting. The green arrow shows the velocity vector.
Questions
- What is the average acceleration for the 5 seconds of motion shown?
- What is the instantaneous acceleration at t=1 s?
- What is the instantaneous acceleration at t = 3 s?
- In the first 2 seconds, is the puck speeding up, slowing down, or moving at constant speed? How do the directions of velocity and acceleration compare?
- In the last 3 seconds, is the puck speeding up, slowing down, or moving at constant speed? How do the directions of velocity and acceleration compare?
- Does the average of the accelerations for the first 2 and last 3 seconds equal the average acceleration for the entire motion? Explain why or why not.
Begin
Credits
Adapted by Vern Lindberg from physlet problem authored by Mario Belloni, using Wolfgang Christian's Physlets.
See Giancoli-PA: 2-5, Giancoli-SE: 2-5.© 2000 by Prentice-Hall, Inc. A Pearson Company