Question 1

Which of the following is a scalar quantity?

Accepted Answer

Temperature

Question 2

A vector is defined as a quantity that has:

Accepted Answer

Both magnitude and direction

Question 3

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

Accepted Answer

$\mathrm{kg\cdot m/s}$

Question 4

If a force of $10\ \mathrm{N}$ is applied to a mass of $2\ \mathrm{kg}$, what is the acceleration produced?

Accepted Answer

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

Question 5

Which equation correctly represents Newton's Second Law?

Accepted Answer

$F = m \cdot a$

Question 6

A vector of $20\ \mathrm{N}$ is directed $30^\circ$ North of East. What is its horizontal (East) component?

Accepted Answer

$20 \cdot \cos 30^\circ$

Question 7

Which of the following is NOT a base SI unit?

Accepted Answer

Newton

Question 8

The vertical component of a vector $V$ at angle $	heta$ is given by:

Accepted Answer

$V \cdot \sin 	heta$

Question 9

Which of the following statements about scalar quantities is correct?

Accepted Answer

They have magnitude only.

Question 10

A car moves $100\ \mathrm{m}$ East, then $80\ \mathrm{m}$ South-East. Which vector best represents the total displacement?

Accepted Answer

The vector sum of $100\ \mathrm{m}$ East and $80\ \mathrm{m}$ South-East

Question 11

Which formula is used to find the magnitude of a vector given its components $V_x$ and $V_y$?

Accepted Answer

$\sqrt{V_x^2 + V_y^2}$

Question 12

If a vector $A$ is $10\ \mathrm{N}$ at $60^\circ$, what is its vertical component?

Accepted Answer

$10 \cdot \sin 60^\circ$

Question 13

Which of the following is a vector quantity?

Accepted Answer

Displacement

Question 14

The SI unit for force is:

Accepted Answer

$\mathrm{N}$

Question 15

Which operation is used to add two vectors graphically?

Accepted Answer

Place tail of second vector at head of first vector

Question 16

A vector $V$ has components $V_x = 10\ \mathrm{N}$ and $V_y = 10\ \mathrm{N}$. What is the magnitude of $V$?

Accepted Answer

$\sqrt{10^2 + 10^2} = 14.14\ \mathrm{N}$

Question 17

Which of the following is NOT a vector quantity?

Accepted Answer

Distance

Question 18

The process of breaking a vector into its horizontal and vertical components is called:

Accepted Answer

Vector resolution

Question 19

If $\vec{A}$ and $\vec{B}$ are vectors, which equation represents their sum?

Accepted Answer

$\vec{A} + \vec{B}$

Question 20

A vector $V$ is $20\ \mathrm{N}$ at $30^\circ$ North of East. What is its vertical (North) component?

Accepted Answer

$20 \cdot \sin 30^\circ$

Vectors, Scalars, and Basic Physics Quantities: Study Notes

Study Guide - Practice Questions