REVIEW Unit Test: Linear Motion Name: _____________________________ Pd: ______

1. The graph to the left represents a car driving down a straight highway. What is the acceleration of the car at t = 4s?

2. The graph to the left represents the motion of a car. Based on the graph the car is most likely ---a) driving up a steep hill c) driving at constant speedb) speeding up d) decelerating

3. In the graph of Marty riding his new moped, which times (between which seconds of T=) on the graph indicate zero velocity?

4. What is Marty’s speed at position 60 m and the time of 7s? (Hint: Use slope formula)

5. What are the units for acceleration?

6. What is the rule for eating in the laboratory?

7. Students complete a laboratory investigation. Who is responsible for returning the materials to their proper place?

8. At the top of a path of a ball tossed upward, the acceleration of the ball is?

9. State whether the following are Vector (V) or Scalar (S):a) Velocity - b) Acceleration - c) Distance - d) Displacement –

10. A ball is thrown straight down at a speed of 3.0 m/s and accelerates under the pull of gravity for 2.0 sec. How fast is it moving after the 2.0 s?

11. A car travels in a straight line for 1.7 sec and covers a distance of 42.1 meters. In calculating the average speed of the car, which answer is most appropriate? (hint: consider significant digits)

12. A pitcher throws a fast ball horizontally toward home plate 18.39 meters away. If the ball is traveling at a speed of 40.0 m/s, neglecting air friction, how long does it take for the ball to get to home plate?

13. A boat was moving at 10 m/s and accelerated at 2 m/s2 for 10 s. What was the boats final speed?

14. A baseball was thrown up with an initial velocity of 14 m/s. It remained in the air for 2s. Which variable quantity was constant while the ball was in the air?

15. A car starts from rest and uniformly accelerates to a final speed of 20.00 m/s in a time of 15.0 s. How far does the car travel during this time?

16. How long must a 2.5 m/s2 acceleration act to change the velocity of a 2.0 kg object by 3.0 m/s?

17. If you find the slope of the graph to the right, what variable quantity will you be fnding?

18. Calculate the slope for the graph to the left.

19. Give an appropriate title for the graph above: