Average Velocity - Section 8.2 Quiz

Two escalators move people up and down between floors of a shopping mall at the same rate, either up or down.

What of the following statements regarding the motion of the escalators is true?
1. The escalators have the same speed, but different velocities
2. The escalators have the same velocity, but different speeds
3. The escalators have the same speed and velocity
4. The escalators have different speeds and velocities
The motion of a person walking is depicted in the following graph. The letters in the graph depict 4 different types of motion during the person’s walk.

Which section of the line on the graph represents uniform negative velocity?
1. Section C
2. Section A
3. Section B
4. Section D
The motion of a person walking is depicted in the following graph. The letters in the graph depict 4 different types of motion during the person’s walk.

Which section of the line on the graph represents uniform positive velocity?
1. Section A
2. Section B
3. Section C
4. Section D
The motion of a person walking is depicted in the following graph. The letters in the graph depict 4 different types of motion during the person’s walk.

Which section of the line on the graph represents motion that is non-uniform?
1. Section D
2. Section A
3. Section B
4. Section C
The motion of a person walking is depicted in the following graph. The letters in the graph depict 4 different types of motion during the person’s walk.

What is the average velocity of the person walking during section C of their motion (10 seconds through 18 seconds)?
1. - 0.5 m/s
2. + 0.5 m/s
3. - 0.75 m/s]
4. + 0.75 m/s
Which of the following represents a correct calculation for slope of a line on a graph?
1. ∆y/∆x
2. ∆x/∆y
3. ∆x + ∆y
4. ∆x - ∆y
What is the average velocity of a cat that runs 20 m [N] in a time interval of 5.0 s?
1. 4.0 m/s [N]
2. 0.25 m/s [N]
3. 15 m/s [N]
4. 5.0 m/s [N]
If a softball is thrown 18 m/s toward home plate, what would be the ball’s displacement after 0.80 s?
1. 14 m toward home plate
2. 23 m toward home plate
3. 14 m away home plate
4. 23 m away home plate
A car is traveling forward at 35.0 km/h. How far does the car travel in 15.0 s?
1. 146 m
2. 525 m
3. 2.33 m
4. 8.40 m
A boat travels 250 m across a river. If the boat heads across the river at 5.00 m/s, how long does it take to cross?
1. 50.0 s
2. 20.8 min
3. 200 s
4. 255 s