Question 1

Which of the following statements best distinguishes between distance and displacement?

Accepted Answer

Distance is always positive and scalar, while displacement can be positive, negative, or zero and is a vector.

Question 2

A car travels 100 m east, then 60 m west. What is the magnitude of its displacement?

Accepted Answer

$$40\ \mathrm{m}$$

Question 3

Which of the following is NOT a vector quantity?

Accepted Answer

Speed

Question 4

If an object moves with constant velocity, which of the following must be true?

Accepted Answer

The object's position changes by equal amounts in equal time intervals.

Question 5

A ball is dropped from rest and falls freely under gravity. Which graph best represents its position versus time?

Accepted Answer

A parabola opening upwards

Question 6

Given the equation for average velocity $$v_{avg} = \frac{\Delta x}{\Delta t}$$, what does $$\Delta x$$ represent?

Accepted Answer

Displacement

Question 7

A runner completes one lap around a 400 m track in 80 seconds, ending at the starting point. What is the runner's average velocity?

Accepted Answer

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

Question 8

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

Accepted Answer

An object is represented as a mass at a single point, ignoring size and shape.

Question 9

A car's motion diagram shows displacement vectors that are increasing in length. What does this indicate about the car's motion?

Accepted Answer

The car is speeding up.

Question 10

Which of the following is the correct formula for the change in velocity?

Accepted Answer

$$\Delta \vec{v} = \vec{v}_f - \vec{v}_i$$

Question 11

A cyclist travels 3 km north, then 4 km east. What is the magnitude of the cyclist's displacement?

Accepted Answer

$$5\ \mathrm{km}$$

Question 12

Which of the following statements about speed and velocity is correct?

Accepted Answer

Speed is the magnitude of velocity and is always positive.

Question 13

A motion diagram shows equally spaced images of a moving object. What does this indicate about the object's motion?

Accepted Answer

The object is moving at constant speed.

Question 14

Which of the following best describes the purpose of a model in physics?

Accepted Answer

To simplify reality by focusing on essential features and making predictions.

Question 15

If an object moves in a straight line with a constant acceleration $$a$$, which equation gives its position $$x at $$time $$t ($$starting from $$x_0$$ with initial velocity $$v_0$$)?

Accepted Answer

$$x = x_0$ + v_0$ t + \frac{1}{2} a t^2$

Question 16

A car accelerates from rest at $$2\ \mathrm{m/s^2$}$$ for $$5\ \mathrm{s}. $$What is its final velocity?

Accepted Answer

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

Question 17

Which of the following is a correct statement about vectors?

Accepted Answer

Vectors have both magnitude and direction.

Question 18

A motion diagram for a car stopping shows displacement vectors that decrease in length. What does this indicate?

Accepted Answer

The car is slowing down.

Question 19

Which of the following best describes the difference between translational and rotational motion?

Accepted Answer

Translational motion involves movement along a path, while rotational motion involves spinning around an axis.

Question 20

A student walks 3 m east, then 4 m north. What is the direction of the displacement vector relative to east?

Accepted Answer

$$53^\circ$$ north of east

Kinematics: Describing Motion in One and Two Dimensions

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