Question 1

Which of the following best describes the motion shown in the first image (the truck on a long, straight road)?

Accepted Answer

Straight-line (1D translational) motion

Question 2

A basketball is thrown towards a hoop as shown in the second image. Which type of motion is this an example of?

Accepted Answer

Projectile motion

Question 3

Refer to the motion diagrams for Car A and Car B (images 3 and 4). If the time interval between each frame is the same, which car is moving faster?

Accepted Answer

Car B, because the images are farther apart

Question 4

In the particle model (see image 5), why do we represent a car as a single dot in the motion diagram?

Accepted Answer

To simplify the analysis by focusing on the motion of one point

Question 5

A runner starts at $$x_i = -2\ \mathrm{m}$$ and finishes at $$x_f = 3\ \mathrm{m}. $$What is the displacement $$\Delta x$$?

Accepted Answer

$$\Delta x = 5\ \mathrm{m}$$

Question 6

A car moves from $$x_i = -1\ \mathrm{m} to$$ $$x_f = -3\ \mathrm{m}. $$What is the displacement and the distance traveled?

Accepted Answer

Displacement: $$-2\ \mathrm{m}$$, Distance: $$2\ \mathrm{m}$$

Question 7

A particle starts at the origin, moves to $$x = 2\ \mathrm{m}$$, then returns to the origin. What is the total distance traveled and the displacement?

Accepted Answer

Distance: $$4\ \mathrm{m}$$, Displacement: $$0\ \mathrm{m}$$

Question 8

If a car travels $$100\ \mathrm{m} in$$ $$20\ \mathrm{s}$$, what is its average speed?

Accepted Answer

$$5\ \mathrm{m/s}$$

Question 9

A runner moves from $$x_i = 0\ \mathrm{m} to$$ $$x_f = 10\ \mathrm{m} in$$ $$5\ \mathrm{s}. $$What is the average velocity?

Accepted Answer

$$2\ \mathrm{m/s}$$

Question 10

Which of the following is a scalar quantity?

Accepted Answer

Distance

Question 11

Which of the following is a vector quantity?

Accepted Answer

Velocity

Question 12

A car moves along a straight road from $$x_i = 5\ \mathrm{m} to$$ $$x_f = -3\ \mathrm{m} in$$ $$4\ \mathrm{s}. $$What is its average velocity?

Accepted Answer

$$-2\ \mathrm{m/s}$$

Question 13

Which of the following best describes the difference between displacement and distance?

Accepted Answer

Displacement is the straight-line change in position (can be negative), distance is the total path length (always positive)

Question 14

A car travels $$30\ \mathrm{m}$$ east, then $$40\ \mathrm{m}$$ west. What is the total distance traveled and the displacement?

Accepted Answer

Distance: $$70\ \mathrm{m}$$, Displacement: $$-10\ \mathrm{m}$$

Question 15

Which of the following is the correct SI unit for velocity?

Accepted Answer

$$\mathrm{m/s}$$

Question 16

A cyclist rides $$12\ \mathrm{km}$$ north in $$0.5\ \mathrm{h}$$, then $$8\ \mathrm{km}$$ south in $$0.5\ \mathrm{h}. $$What is the average velocity for the entire trip?

Accepted Answer

$$2\ \mathrm{km/h}$$\ north

Question 17

Which of the following statements about vectors is correct?

Accepted Answer

Vectors have both magnitude and direction

Question 18

A car accelerates from rest and covers $$100\ \mathrm{m} in$$ $$10\ \mathrm{s}. $$What is its average speed?

Accepted Answer

$$5\ \mathrm{m/s}$$

Question 19

Which of the following is NOT a base SI unit used in mechanics?

Accepted Answer

Joule (J)

1-D Kinematics I: Representing Motion and Units

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