Multiple Choice
2.1 Relative Motion, Distance, and Displacement

a description of motion depends on the reference frame

motion appears the same in all reference frames

reference frames affect the motion of an object

you can see motion better from certain reference frames

It is always equal to the distance the object moved between its initial and final positions.

It is both the straight line distance the object moved as well as the direction of its motion.

It is the direction the object moved between its initial and final positions.

It is the straight line distance the object moved between its initial and final positions.

130 miles

30 miles east

30 miles west

Cannot be determined from the information given

Yes, there is a single, correct frame of reference because motion is a relative term.

Yes, there is a single, correct frame of reference which is in terms of Earthâ€™s position.

No, there is not a single, correct frame of reference because motion is a relative term.

No, there is not a single, correct frame of reference because motion is independent of frame of reference.
If a space shuttle orbits Earth once, what is the shuttleâ€™s distance traveled and displacement?
 Distance and displacement both are zero.
 Distance is circumference of the circular orbit while displacement is zero.
 Distance is zero while the displacement is circumference of the circular orbit.
 Distance and displacement both are equal to circumference of the circular orbit.
2.2 Speed and Velocity

Cyclist 1

Cyclist 2

Cyclist 3

Cyclist 4
A car travels with an average speed of 23 m/s for 82 s. Which of the following could NOT have been the car's displacement?
 1,700 m east
 2,000 m west
 1,600 m north
 1,500 m south

She rode the same amount of time and a different distance each day.

She rode for different amounts of time and distance each day.

She rode the same distance and the same amount of time each day.

She rode the same distance but different amounts of time each day.

Average velocity is zero.

The magnitude of average velocity is equal to the average speed.

The magnitude of average velocity is greater than the average speed.

The magnitude of average velocity is less than the average speed.
2.3 Position vs. Time Graphs
What is the slope of a straight line graph of position vs. time?
 Velocity
 Displacement
 Distance
 Acceleration
Using the graph, what is the runnerâ€™s velocity from 4 to 10 s?
 â€“3 m/s
 0 m/s
 1.2 m/s
 3 m/s
2.4 Velocity vs. Time Graphs

The rate of acceleration of the car.

The area enclosed by the carâ€™s trip.

The carâ€™s displacement during the 10 s.

The velocity of the car at t = 10 s.

75\,\text{m}

130\,\text{m}

150\,\text{m}

cannot be determined from the information given