Question 1

Which of the following is a vector quantity?

Accepted Answer

Displacement

Question 2

A runner completes a lap around a 400 m track, ending at the starting point. What is the runner's displacement?

Accepted Answer

$0\ \mathrm{m}$

Question 3

Which statement is true about the magnitude of displacement compared to the distance traveled?

Accepted Answer

Displacement is either smaller than or equal to distance.

Question 4

A car travels 100 m east, then 100 m west. What is the total distance and displacement?

Accepted Answer

Distance: $200\ \mathrm{m}$, Displacement: $0\ \mathrm{m}$

Question 5

Which formula correctly defines average speed?

Accepted Answer

$s_{\mathrm{avg}} = \dfrac{d}{\Delta t}$

Question 6

During a drag race, a car travels $201.2\ \mathrm{m}$ west in $9.43\ \mathrm{s}$. What is its average velocity?

Accepted Answer

$21.3\ \mathrm{m/s}$ [west]

Question 7

A person walks $60\ \mathrm{m}$ north, then $40\ \mathrm{m}$ south. What is their displacement?

Accepted Answer

$20\ \mathrm{m}$ north

Question 8

Which graph feature represents constant velocity in a displacement vs. time graph?

Accepted Answer

A straight line with constant nonzero slope

Question 9

If a canoeist paddles north across a $1500\ \mathrm{m}$ lake at $2.0\ \mathrm{m/s}$, how long does it take to cross?

Accepted Answer

$750\ \mathrm{s}$

Question 10

On a velocity vs. time graph, what does the area under the curve represent?

Accepted Answer

Displacement

Question 11

A car moves at $28\ \mathrm{m/s}$ for $0.20\ \mathrm{s}$ during a driver's reaction time. What is the displacement?

Accepted Answer

$5.6\ \mathrm{m}$

Question 12

A truck travels $80\ \mathrm{km/h}$ for $0.5\ \mathrm{h}$, then $60\ \mathrm{km/h}$ for $1.5\ \mathrm{h}$. What is the total distance?

Accepted Answer

$130\ \mathrm{km}$

Question 13

Which of the following is the correct formula for average acceleration?

Accepted Answer

$a_{\mathrm{avg}} = \dfrac{v_f - v_i}{t_f - t_i}$

Question 14

A person walks east at $2.0\ \mathrm{m/s}$, then $5.0\ \mathrm{s}$ later is walking west at $3.0\ \mathrm{m/s}$. What is the average acceleration (east is positive)?

Accepted Answer

$1.0\ \mathrm{m/s}^2$ west

Question 15

Which kinematic equation can be used to find final velocity after time $t$ for constant acceleration?

Accepted Answer

$v = v_i + at$

Question 16

A car accelerates from $5\ \mathrm{m/s}$ to $25\ \mathrm{m/s}$ in $4\ \mathrm{s}$. What is its average acceleration?

Accepted Answer

$5\ \mathrm{m/s}^2$

Question 17

Which of the following is NOT a valid use of the constant acceleration equations?

Accepted Answer

When acceleration changes during the time interval

Question 18

If the velocity vs. time graph of an object is a horizontal line at $v = 3\ \mathrm{m/s}$, what is the object's acceleration?

Accepted Answer

$0\ \mathrm{m/s}^2$

Question 19

A car travels at $25\ \mathrm{m/s}$ for $2.0\ \mathrm{s}$. How far does it travel in this time?

Accepted Answer

$50\ \mathrm{m}$

Introduction to 1D Kinematics: Scalars, Vectors, Distance, Displacement, and Motion

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