1. A quantitative description of motion without reference to its physical causes.
a. Dynamics b. Acoustics c. Kinematics d. Optics
2. These are quantities that can be described completely by their magnitudes and appropriate units.
a. quantitative measurements c. scalar quantity
b. vector quantity d. qualitative descriptions
3. These are quantities completely described by their magnitudes, appropriate units, and their
directions.
a. velocity c. speed
b. scalar quantity d. vector quantity
4. It is a physical entity to which motion or position of an object is being referred.
a. reference frame b. position c. index frame d. distance
5. Actual length of path taken by an object in moving from its initial position to final position.
a. displacement b. velocity c. speed d. distance
6. Why should you specify a reference frame when describing motion?
a. a description of motion depends on the reference frame
b. motion appears the same in all reference frames
c. reference frames affect the motion of an object
d. you can see motion better from certain reference frames
7. Which of the following is true for the displacement of an object?
a. It is always equal to the distance the object moved between its initial and final positions.
b. It is both the straight line distance the object moved as well as the direction of its motion.
c. It is the direction the object moved between its initial and final positions.
d. It is the straight line distance the object moved between its initial and final positions.
8. If a biker rides west for 50 miles from his starting position, then turns and bikes back east 80 miles.
What is his net displacement?
a. 130 miles
b. 30 miles east
c. 30 miles west
d. Cannot be determined from the information given
9. Suppose a train is moving along a track. Is there a single, correct reference frame from which to
describe the train’s motion?
a. Yes, there is a single, correct frame of reference because motion is a relative term.
b. Yes, there is a single, correct frame of reference which is in terms of Earth’s position.
c. No, there is not a single, correct frame of reference because motion is a relative term.
d. No, there is not a single, correct frame of reference because motion is independent of frame of
reference.
10. If a space shuttle orbits Earth once, what is the shuttle’s distance traveled and displacement?
a. Distance and displacement both are zero.
b. Distance is circumference of the circular orbit while displacement is zero.
c. Distance is zero while the displacement is circumference of the circular orbit.
d. Distance and displacement both are equal to circumference of the circular orbit.
Module 2: Speed, velocity, Acceleration
1. Straight-line distance between its initial and final positions, with direction toward the final
position.
b. displacement b. distance c. scalar d. speed
2. It determines how fast or how slow an object is moving.
a. speed b. acceleration c. velocity d. force
3. A car moves 15 km/h westward. This quantity of motion associated with direction is known
as___.
a. speed b. acceleration c. scalar d. Velocity
4. A change in velocity with respect to time
a. velocity b. vector c. acceleration d. speed
5. A pitcher throws a baseball from the pitcher’s mound to home plate in 0.46 s. The distance is
18.4 m. What was the average speed of the baseball?
a. 40 m/s
b. - 40 m/s
c. 0.03 m/s
d. 8.5 m/s
6. Cassie walked to her friend’s house with an average speed of 1.40 m/s. The distance between the
houses is 205 m. How long did the trip take her?
a. 146 s
b. 0.01 s
c. 2.50 min
d. 287 s
7. A trucker drives along a straight highway for 0.25 h with a displacement of 16 km south. What is
the trucker’s average velocity?
a. 4 km/h north
b. 4 km/h south
c. 64 km/h north
d. 64 km/h south
8. A bird flies with an average velocity of 7.5 m/s east from one branch to another in 2.4 s. It then pauses
before flying with an average velocity of 6.8 m/s east for 3.5 s to another branch. What is the bird’s total
displacement from its starting point?
a. 42 m west
b. 6 m west
c. 6 m east
d. 42 m east