Question 1

Which of the following best describes the Particle Model used in physics to analyze motion?

Accepted Answer

It represents an object as a single point to simplify analysis of its motion.

Question 2

A car moves from $$x = 2\ \mathrm{m} to$$ $$x = 7\ \mathrm{m} in$$ $$3\ \mathrm{s}. $$What is the displacement of the car?

Accepted Answer

$$5\ \mathrm{m}$$

Question 3

A runner travels from $$x = 0\ \mathrm{m} to$$ $$x = 100\ \mathrm{m}$$ and then back to $$x = 40\ \mathrm{m} in$$ $$20\ \mathrm{s}. $$What is the average velocity?

Accepted Answer

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

Question 4

Which of the following statements about displacement is correct?

Accepted Answer

Displacement is the change in position and can be positive or negative.

Question 5

A ball rolls down a $$30^\circ$$ incline, traveling $$9.8\ \mathrm{m} in$$ $$2\ \mathrm{s}. $$What is its average velocity along the incline?

Accepted Answer

$$4.9\ \mathrm{m/s}$$

Question 6

A motion diagram shows a car with equal spacing between each dot. What does this indicate about the car's motion?

Accepted Answer

The car is moving at constant speed.

Question 7

A student drops a ball from a balcony. Which motion diagram best represents the ball's motion as it falls?

Accepted Answer

Dots get farther apart as time increases.

Question 8

If a car moves from $$x = -3\ \mathrm{m} to$$ $$x = 2\ \mathrm{m} in$$ $$5\ \mathrm{s}$$, what is its average velocity?

Accepted Answer

$$1\ \mathrm{m/s}$$

Question 9

A horse runs in a straight line. Its position changes from $$x = 600\ \mathrm{m} at$$ $$t = 0\ \mathrm{s} to$$ $$x = 400\ \mathrm{m} at$$ $$t = 20\ \mathrm{s}. $$What is its average velocity during this interval?

Accepted Answer

$$-10\ \mathrm{m/s}$$

Question 10

Which of the following is NOT required to specify the position of an object?

Accepted Answer

The object's mass

Question 11

A car travels from $$x = 2\ \mathrm{m} to$$ $$x = 4\ \mathrm{m}$$ between $$t = 1\ \mathrm{s}$$ and $$t = 3\ \mathrm{s}. $$What is the time interval for this motion?

Accepted Answer

$$2\ \mathrm{s}$$

Question 12

A student walks from GameStop to Hot Topic, a distance of $$250\ \mathrm{m}. If $$the origin is at Hot Topic and the student is $$50\ \mathrm{m}$$ away from Hot Topic, what is the student's $$x$$ position?

Accepted Answer

$$-50\ \mathrm{m}$$

Question 13

Which of the following best describes average speed?

Accepted Answer

The total distance traveled divided by the total time interval.

Question 14

A car moves from $$x = 0\ \mathrm{m} to$$ $$x = 4\ \mathrm{m} in$$ $$2\ \mathrm{s}$$, then from $$x = 4\ \mathrm{m} to$$ $$x = 2\ \mathrm{m} in$$ $$1\ \mathrm{s}. $$What is the average velocity for the entire $$3\ \mathrm{s}$$?

Accepted Answer

$$0.67\ \mathrm{m/s}$$

Question 15

Which of the following is true about time intervals ($$\Delta t) in $$physics?

Accepted Answer

Time intervals are always positive because final time is greater than initial time.

Question 16

A student walks $$20\ \mathrm{m}$$ east, then $$10\ \mathrm{m}$$ west. What is the total distance traveled and the displacement?

Accepted Answer

Distance: $$30\ \mathrm{m}$$, Displacement: $$10\ \mathrm{m}$$ east

Question 17

A car's position changes from $$x = 24\ \mathrm{m} to$$ $$x = 44\ \mathrm{m} in$$ $$5\ \mathrm{s}. $$What is its average velocity?

Accepted Answer

$$4\ \mathrm{m/s}$$

Physics with Calculus: Describing Motion – Study Guidance

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