Physics - Chapter 3 Study Guide
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1. Define each of the following:
            a) vector
            b) scalar
            c) projectile motion
            d) parabolic motion

2. Identify each of the following as a scalar quantity or a vector quantity.
            a) the number of boys on a football team
            b) the speed of a boat
            c) the acceleration of carnival ride
            d) the displacement of a car
            e) the distance a bird flies
            f) the velocity of a horse
            g) the mass of a rock
            h) the time it takes to accelerate from rest to 20 m/s
            i) the velocity of a hurricane

3. A truck travels down the road at a velocity of vtruck. The driver speeds up so that the truck is traveling one fourth the original velocity. How would you express the new velocity of the truck using vtruck?

4. Suppose the truck in #3 were to turn and travel in the opposite direction three times as fast as the original velocity. How would you express the new velocity of the truck using vtruck?

5. What happens if you multiply a vector by a scalar?

6. What would be the best coordinate system to analyze a cable car coming down a mountain at an angle of 75E with the ground?

7. What would be the best coordinate system to analyze a bicycle traveling southeast from one neighborhood to another?

8. How do you find the x and y component of a vector with respect to the angel between the vector and the x-axis?

9. Give a couple of examples of projectile motion.

10. What shape does the path of a projectile have?

11. You are in a moving car that is heading south, and you see a person standing on the side of the road. From your perspective, which direction does the person seem to be heading?

12. A cow walks 25 m east, then 5 m south, and another 10 m east. Use the graphical method to find the magnitude of the cow’s net displacement.

13. Diane rows a boat at 8.0 m/s directly across a river that flows at 6.0 m/s.
            a) What is the resultant speed of the boat?

            b) If the river is 240 m wide, how long will it take Diane to row across?

            c) How far down stream will Diane be?

14. A car travels 10.2 km east, then 35.1 km 25E north of east, then 7.83 km south, and finally 12.3 km 42.1E south of east. What is the resultant displacement of the car?

15. A toy car rolls off a table that is 1.20 m high, and it lands on the floor 1.93 m from the base of the table.
            a) How long does it take the toy car to hit the floor?

            b) What is the initial speed of the toy car?

16. A golf ball with an initial angle of 29.3E lands exactly 215 m down the range on a level course.
            a) What initial speed would achieve this result?

            b) What would the maximum height of the ball be?

17. Look at #3 and #5 on page 94 and #3 on page 102.