Question 1

Which of the following best describes the particle model in physics?

Accepted Answer

It represents an object as a single point, ignoring its size and shape to simplify motion analysis.

Question 2

A runner moves back and forth along a straight track, starting at $$x = 0 m$$, running to $$x = 50 m$$, then back to $$x = 20 m. $$What is the runner's total displacement?

Accepted Answer

$$30 m$$

Question 3

Which of the following quantities is a vector?

Accepted Answer

Velocity

Question 4

A car travels $$100 m $$east in $$5 s$$, then $$60 m $$west in $$3 s. $$What is the car's average velocity for the entire trip?

Accepted Answer

$$5$$ \frac{m}{s}$ east

Question 5

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

Accepted Answer

$$\frac{m}{s^2$}$$

Question 6

If a motion diagram shows dots spaced increasingly farther apart, what does this indicate about the object's motion?

Accepted Answer

The object is speeding up.

Question 7

A student measures a distance as $$0.0000075 m. $$Express this value in scientific notation.

Accepted Answer

$$7.5 	imes 10$$^{-7}$$ m

Question 8

Which prefix corresponds to $$10^{-9}$$?

Accepted Answer

nano

Question 9

A cyclist travels $$30 km $$north, then $$40 km $$east. What is the magnitude of the cyclist's displacement?

Accepted Answer

$$50 km$$

Question 10

Which of the following statements about vectors is correct?

Accepted Answer

Vectors can be represented by arrows, where the length indicates magnitude and the direction indicates direction.

Question 11

A motion diagram shows an object at the same position at each time interval. What does this indicate?

Accepted Answer

The object is not moving.

Question 12

If a vector $$\vec{A}$$ has components $$A_x = 3$$ and $$A_y = 4$$, what is the magnitude of $$\vec{A}$$?

Accepted Answer

$$5$$

Question 13

Which of the following best describes average speed?

Accepted Answer

Total distance traveled divided by total time.

Question 14

A student walks $$10 m $$east, then $$10 m $$west. What is the total distance and displacement?

Accepted Answer

Distance: $$20 m$$, Displacement: $$0 m$$

Question 15

Which of the following is NOT a scalar quantity?

Accepted Answer

Velocity

Question 16

If an object moves with constant velocity, what can be said about its acceleration?

Accepted Answer

The acceleration is zero.

Question 17

A car accelerates from rest to $$20 m/s in$$ $$5$$ seconds. What is its average acceleration?

Accepted Answer

$$4$$ \frac{m}{$$s^2$$}$

Question 18

Which of the following is the correct method for adding two vectors $$\vec{A}$$ and $$\vec{B}$$ graphically?

Accepted Answer

Place the tail of $$\vec{B} at $$the head of $$\vec{A}$$ and draw the resultant from the tail of $$\vec{A} to $$the head of $$\vec{B}.$$

Question 19

A position-time graph shows a straight line with a positive slope. What does this indicate about the object's motion?

Accepted Answer

The object is moving at a constant velocity in the positive direction.

Question 20

Which of the following is the correct scientific notation for $$6,370,000 m$$?

Accepted Answer

$$6.37 	imes 10^6$ m

Introduction to Motion: Study Notes for Calculus-Based Physics

Guida di studio - Domande di pratica

Study guide - Flashcard