# Linear Acceleration

1. Set the velocity to 1.0 m/s and the acceleration to 0 . Click the start button. What happens to the velocity?

2. Set the acceleration to + 1.0 . Notice the acceleration vector is 1 unit long now as well. Acceleration is the change in velocity per unit of time. If we move time forward by 1.0 s. The velocity(vel) vector should become 1.0 m/s longer. Try it.

3. Try without the applet first, then check. a. What will happen to the length of the red acceleration vector if you increase a to +2? b What will happen to the length of the black velocity vector after 1.0 s? c. What will happen to the length of the black velocity vector after 4.0 s?

2. Set the acceleration to +2.0 m/s^{2 }and keep the initial velocity at 1.0 m/s. How much will the velocity change after 1.0 s, 2.0 s, 3.5 s? (Hint: acceleration is the change in velocity per second)

4. Keep the acceleration at 2.0 m/s^{2 }and change the initial velocity to -2.0 m/s.
a. What will be the length of the acceleration vector? What direction will it be pointing?
b. What will be the length of the black velocity vector after 1.0 s?
c. What will be the length of the black velocity vector after 3.0 s?

5. A car travelling at 10.0 m/s East accelerates at 5.0 m/s^{2} East. How much will the velocity change in 3.0 s?

6. A car travelling at 10.0 m/s East accelerates at 5.0 m/s^{2 }East. What will be the velocity after 3.0 s?

7. A car travelling at 10.0 m/s **West** accelerates at 5.0 m/s^{2 }East. What will be the velocity after 3.0 s?