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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