1. Unit Three Test Review Good Luck!

2. Sketch a motion map of object A x t A B

3. Which object has a greater displacement at 3 seconds? x t A B 3 s Both objects have the same displacement.

4. Which object has a greater acceleration and why? x t A B 3 s Object A because it has a changing velocity.

5. A car starts from rest and accelerates to 15 m/sec over a time of 10 seconds. Make a motion map!

6. A car starts from rest and accelerates to 15 m/sec over a time of 10 seconds. Draw the velocity vs time graph! v t

7. A car starts from rest and accelerates to 15 m/sec over a time of 10 seconds. Calculation the acceleration v t Acceleration = 1.5 m/s/s

8. A car starts from rest and accelerates to 15 m/sec over a time of 10 seconds. How far does the car travel? v t Displacement = 75 m

9. A train traveling at 30 m/sec slows to 10 m/sec in 10 seconds. It then travels at that speed for another 20 seconds. Make velocity vs. time graph for the motion. 510152025 10 20 30 t (sec) v (m/s) 30

10. What is the acceleration of the train while it is slowing down? 510152025 10 20 30 t (sec) v (m/s) 30

11. What is the displacement of the train during the 30 seconds it is in motion. 510152025 10 20 30 t (sec) v (m/s) 30 Δx = Area = 400 m

12. A train going 25 m/sec slams on its breaks and comes to a stop in 87 seconds. What is the acceleration of the train? a = - 0.29 m/s/s

13. A train going 25 m/sec slams on its breaks and comes to a stop in 87 seconds. How far does it travel when coming to a stop? x = 1087.5 m

14. An arrow is fired up with an initial velocity of 18 m/sec. What is the acceleration at the highest point? a = -9.8 m/s/s

15. An arrow is fired up with an initial velocity of 18 m/sec. How high does the arrow fly? Xf = 16.5 m

16. An arrow is fired up with an initial velocity of 18 m/sec. What is the total time the arrow is in the air. t = 3.68 sec