Master Physics Fundamentals: Online Quizzes for Introduction to Physics

Question 1

Which statement does NOT represent an axiom of probability theory?

Accepted Answer

The probability of an event occurring is conditional on the occurrence of another event.

Answer

The probability of an event occurring lies between 0 and 1.

Answer

The probability of the union of two mutually exclusive events equals the sum of their individual probabilities.

Answer

The probability of an event is independent of any other event.

Question 2

What is the probability of event A happening, given that event B has already happened?

Accepted Answer

P(A | B)

Answer

P(A) + P(B)

Answer

P(B | A)

Answer

P(A)

Question 3

A researcher flips a fair coin twice. Since the flips are independent events, what is the probability of getting tails on the first flip and heads on the second flip?

Accepted Answer

0.25

Answer

0.50

Answer

0.75

Answer

1.00

Question 4

When flipping two coins independently, what is the likelihood of getting at least one head?

Accepted Answer

50%

Answer

25%

Answer

75%

Answer

100%

Question 5

In probability, what is the specific meaning of conditional probability?

Accepted Answer

The likelihood of an event happening given that another specific event has already occurred.

Answer

The probability of two events happening independently, without any connection or influence on each other.

Answer

The probability of an event happening repeatedly in a row, also known as repeated probability.

Answer

The probability of an event happening based only on its past history, without considering any present or future factors.

Question 6

In a series of independent trials, each with a constant probability of success, which probability distribution can be used to model the number of successes?

Accepted Answer

Binomial distribution

Answer

Normal distribution

Answer

Poisson distribution

Answer

Exponential distribution

Question 7

A standard deck of playing cards has 52 cards, including 13 hearts. What's the probability of randomly drawing a heart?

Accepted Answer

13/52

Answer

1/52

Answer

1/4

Answer

26/52

Question 8

In a group of 100 psychology students, 60 are female. If a student is randomly chosen from this group, what is the probability of choosing a female student?

Accepted Answer

60%

Answer

40%

Answer

50%

Question 9

In psychological research, 'probability' primarily refers to:

Accepted Answer

A numerical measure of the uncertainty surrounding an event's occurrence

Answer

A prediction about an event's occurrence

Answer

The number of times an event has happened in the past

Answer

A personal belief about the likelihood of an event

Question 10

In psychological research, a continuous probability distribution is characterized by:

Accepted Answer

Any value within a defined interval or range.

Answer

Discrete values only, limiting outcomes to specific possibilities.

Answer

Exclusive use of a probability mass function.

Answer

Perfect symmetry in its distribution.

Question 11

In hypothesis testing, what does it mean when we fail to reject the null hypothesis?

Accepted Answer

There is not enough evidence to conclude that the null hypothesis is false.

Answer

The research hypothesis is supported.

Answer

The null hypothesis is proven true.

Answer

The alternative hypothesis is accepted.

Question 12

In a survey of 500 psychology students, 250 identify as female, 150 as male, and 100 as non-binary. If a student is chosen at random, what's the probability they identify as non-binary?

Accepted Answer

10%

Answer

20%

Answer

30%

Answer

40%

Question 13

A car starts from rest and accelerates uniformly at a rate of 5 meters per second squared for 10 seconds. What is the car's final velocity?

Accepted Answer

50 m/s

Answer

10 m/s

Answer

100 m/s

Question 14

In the International System of Units (SI), what is the unit used to measure velocity?

Accepted Answer

m/s

Answer

km/h

Answer

mph

Answer

ft/s

Question 15

A car travels 100 kilometers in 2 hours and then 150 kilometers in 3 hours. What is the average speed of the car for the entire trip?

Accepted Answer

83.33 km/h

Answer

75 km/h

Answer

112.5 km/h

Question 16

What is the International System of Units (SI) unit of velocity?

Accepted Answer

Meter per second

Answer

Meter

Answer

Kilogram

Answer

Second

Question 17

Which equation accurately represents Newton's second law of motion?

Accepted Answer

F = ma

Answer

F = (1/2)mv^2

Answer

F = mv

Answer

F = mg

Question 18

What is the SI unit of the universal gravitational constant?

Accepted Answer

Newton-meter squared per kilogram squared

Answer

Newton

Answer

Newton-meter

Answer

Kilogram-meter squared per second squared

Question 19

Which of the following is a vector quantity?

Accepted Answer

Velocity

Answer

Mass

Answer

Temperature

Answer

Energy

Question 20

What is the formula for centripetal force?

Accepted Answer

Fc = mv^2/r

Answer

Fc = ma

Answer

Fc = (1/2)mv^2

Answer

Fc = mg

Question 21

Which force is an example of a conservative force?

Accepted Answer

Gravity

Answer

Friction

Answer

Tension

Answer

Normal force

Question 22

For a uniform circular disk with mass 'M' and radius 'R' rotating about an axis perpendicular to the disk with a constant angular velocity 'ω,' determine its rotational kinetic energy 'K.'

Accepted Answer

K = (1/2) * I * ω^2

Answer

K = I * ω

Answer

K = M * ω^2 * R

Answer

K = (1/2) * M * v^2

Question 23

The law of conservation of momentum states that:

Accepted Answer

Total momentum of a closed system is constant

Answer

Total energy of a closed system is constant

Answer

Total angular momentum of a closed system is constant

Answer

Total kinetic energy of a closed system is constant

Question 24

Which of the following is a vector quantity?

Accepted Answer

Acceleration

Answer

Distance

Answer

Speed

Answer

Mass

Question 25

The gravitational force between two masses is:

Accepted Answer

Directly proportional to the product of the masses

Answer

Inversely proportional to the product of the masses

Answer

Directly proportional to the square of the masses

Answer

Inversely proportional to the square of the masses

Question 26

Which of the following is a unit of pressure?

Accepted Answer

Pascal

Answer

Newton

Answer

Joule

Answer

Watt

Question 27

A car travels at a steady speed of 10 meters per second. How far does it travel in 5 seconds?

Accepted Answer

50 meters

Answer

10 meters

Answer

100 meters

Answer

25 meters

Question 28

Which of the following is NOT a fundamental unit in the International System of Units (SI)?

Accepted Answer

hertz

Answer

meter

Answer

kilogram

Answer

second

Question 29

A particle moves with a constant velocity of 10 m/s for 5 seconds. What distance does it travel?

Accepted Answer

20 m

Answer

50 m

Answer

100 m

Answer

200 m

Question 30

A system has 100 J of potential energy and 50 J of kinetic energy. What is the total mechanical energy of the system?

Accepted Answer

150 J

Answer

50 J

Answer

100 J

Answer

200 J

Question 31

Which of the following is a vector quantity?

Accepted Answer

momentum

Answer

speed

Answer

temperature

Answer

mass

Question 32

Which of the following is NOT a type of friction?

Accepted Answer

air resistance

Answer

static friction

Answer

kinetic friction

Answer

rolling friction

Question 33

The gravitational constant (G) is approximately equal to:

Accepted Answer

6.67 × 10⁻¹¹ m³ kg⁻¹ s⁻²

Answer

6.67 × 10⁻¹⁰ m³ kg⁻¹ s⁻²

Answer

6.67 × 10⁻⁹ m³ kg⁻¹ s⁻²

Answer

6.67 × 10⁻⁸ m³ kg⁻¹ s⁻²

Question 34

Which law describes the relationship between an object's initial velocity, final velocity, acceleration, and displacement?

Accepted Answer

Kinematic Equation

Answer

Newton's First Law

Answer

Newton's Second Law

Answer

Hooke's Law

Question 35

What is the SI unit of work and energy?

Accepted Answer

Joule

Answer

Newton

Answer

Watt

Answer

Pascal

Question 36

What is the acceleration due to gravity near the Earth's surface?

Accepted Answer

9.8 m/s²

Answer

32 ft/s²

Answer

10 m/s²

Answer

9.8 ft/s²

Question 37

What is the SI unit of force?

Accepted Answer

Newton

Answer

Kilogram

Answer

Pound

Answer

Joule

Question 38

Which law states that the net force acting on an object is equal to the mass of the object multiplied by its acceleration?

Accepted Answer

Newton's Second Law

Answer

Newton's First Law

Answer

Newton's Third Law

Answer

Law of Conservation of Momentum

Question 39

Which of the following is a non-conservative force?

Accepted Answer

Friction

Answer

Gravity

Answer

Tension

Answer

Normal force

Question 40

A block of mass 2 kg slides down a frictionless inclined plane of height 1 m and length 2 m. What is the speed of the block at the bottom of the plane? (Hint: Use conservation of energy)

Accepted Answer

4.43 m/s

Answer

2.21 m/s

Answer

8.86 m/s

Question 41

According to the inverse square law of gravitation, the gravitational force between two objects is:

Accepted Answer

Inversely proportional to the square of the distance between them

Answer

Directly proportional to the distance between them

Answer

Independent of the distance between them

Question 42

Which of the following is a vector quantity that describes both magnitude and direction?

Accepted Answer

Velocity

Answer

Temperature

Answer

Volume

Answer

Mass

Question 43

The SI unit of force, which is used to quantify the strength of a force, is the:

Accepted Answer

Newton

Answer

Joule

Answer

Pascal

Answer

Watt

Question 44

The approximate value of acceleration due to gravity on Earth is:

Accepted Answer

9.8 m/s²

Answer

4.9 m/s²

Answer

0 m/s²

Answer

19.6 m/s²

Question 45

Which of the following quantities is a scalar and does not have a specified direction?

Accepted Answer

Temperature

Answer

Acceleration

Answer

Force

Answer

Velocity

Question 46

In the International System of Units (SI), what is the base unit of distance?

Accepted Answer

Meter

Answer

Inch

Answer

Centimeter

Answer

Foot

Question 47

Which of the following forces is considered fundamental in physics?

Accepted Answer

Gravitational force

Answer

Elastic force

Answer

Tension force

Answer

Frictional force

Question 48

Which equation represents Newton's second law of motion?

Accepted Answer

F = ma

Answer

F = mg

Answer

F = kx

Answer

F = mv^2/r

Question 49

For an object with mass m at a height h above the ground, which equation describes its potential energy?

Accepted Answer

mgh

Answer

1/2 mgh

Answer

h/mg

Answer

mg/h

Question 50

Which of the following forces is conservative?

Accepted Answer

Gravitational force

Answer

Frictional force

Answer

Tension force

Question 51

What is the expression for the momentum of an object with mass m and velocity v?

Accepted Answer

mv

Answer

m/v

Answer

1/mv

Answer

v/m

Question 52

Which equation represents the relationship between force (F), mass (m), and acceleration (a)?

Accepted Answer

F = ma

Answer

F = v/a

Answer

F = mv

Answer

F = a/v

Question 53

A ball is thrown straight up. At its highest point, what is its acceleration?

Accepted Answer

9.8 m/s² downwards (due to gravity)

Answer

0 m/s²

Answer

Dependent on the initial velocity

Answer

9.8 m/s² upwards

Question 54

A 10 kg object is pushed with a force of 20 N. What is the resulting acceleration of the object?

Accepted Answer

2 m/s²

Answer

5 m/s²

Answer

0.5 m/s²

Answer

200 m/s²

Question 55

A worker does 100 J of work on a crate. If the crate does not gain any kinetic energy, how much energy is lost due to friction?

Accepted Answer

100 J

Answer

50 J

Answer

0 J

Answer

Cannot be determined from the information given.

Question 56

Two objects of equal mass collide head-on with equal and opposite velocities. What is the total momentum of the system after the collision?

Accepted Answer

0

Answer

Twice the initial momentum of one object

Answer

Dependent on the elasticity of the collision

Answer

Equal to the initial momentum of one object

Question 57

A car accelerates uniformly from rest to a speed of 10 m/s in 5 seconds. What is the car's acceleration?

Accepted Answer

2 m/s²

Answer

5 m/s²

Answer

50 m/s²

Answer

0.5 m/s²

Question 58

A ball is thrown horizontally with an initial velocity of 5 m/s. Neglecting air resistance, what is the vertical velocity of the ball after 2 seconds?

Accepted Answer

19.6 m/s downwards

Answer

10 m/s

Answer

5 m/s

Answer

0 m/s

Question 59

Two objects with different masses are dropped from the same height, neglecting air resistance. Which object will hit the ground first?

Accepted Answer

They will hit the ground simultaneously.

Answer

The lighter object

Answer

The heavier object

Answer

It depends on the shape of the objects

Question 60

A car accelerates from rest to a speed of 20 m/s in 5 seconds. What is the car's average acceleration?

Accepted Answer

4 m/s²

Answer

100 m/s²

Answer

1 m/s²

Answer

0.25 m/s²

Question 61

A ball is thrown vertically upwards. What is the acceleration of the ball at its highest point?

Accepted Answer

9.8 m/s² downwards

Answer

9.8 m/s² upwards

Answer

0 m/s²

Question 62

A 10 kg box is pushed across a horizontal surface with a constant force of 50 N. If the coefficient of kinetic friction between the box and the surface is 0.2, what is the acceleration of the box?

Accepted Answer

3 m/s²

Answer

2.5 m/s²

Answer

5 m/s²

Answer

10 m/s²

Question 63

A 2 kg object is moving at a velocity of 4 m/s. What is the object's kinetic energy?

Accepted Answer

16 J

Answer

8 J

Answer

32 J

Question 64

A 5 kg object is lifted vertically upwards a distance of 2 meters. What is the work done against gravity?

Accepted Answer

98 J

Answer

49 J

Answer

10 J

Answer

20 J