Motion and Forces: Master the Fundamentals of Physics

Question 1

A ball is launched vertically upward with an initial velocity of 10 meters per second. What is the maximum height it will reach?

Accepted Answer

10.2 meters

Answer

5 meters

Answer

15.3 meters

Question 2

A ball is launched vertically upward with an initial velocity of 10 m/s from a height of 20 m. What is the maximum height the ball will reach above the ground?

Accepted Answer

30 m

Answer

10 m

Answer

20 m

Answer

40 m

Question 3

A ball is launched horizontally from a height of 10 meters with a speed of 10 meters per second. How far will the ball travel horizontally before hitting the ground?

Accepted Answer

20 meters

Answer

10 meters

Answer

30 meters

Question 4

A block is launched horizontally with an initial velocity v from a height h. Which expression correctly represents the horizontal distance (R) traveled by the block before it hits the ground?

Accepted Answer

R = v * sqrt(2 * h / g)

Answer

R = v^2 / (2 * g)

Answer

R = h * sqrt(2 * v / g)

Answer

R = g * h / v^2

Question 5

An object with a mass of 10 kilograms is moving at a constant speed of 2 meters per second. What is the total force acting on the object?

Accepted Answer

0 Newtons

Answer

10 Newtons

Answer

20 Newtons

Answer

30 Newtons

Question 6

A car moves at a steady speed of 20 meters per second for 10 seconds. What is the car's acceleration during this time period?

Accepted Answer

0 m/s²

Answer

2 m/s²

Answer

10 m/s²

Answer

20 m/s²

Question 7

A simple pendulum of length 1 meter oscillates with a period of 2 seconds. What is the acceleration due to gravity at that location?

Accepted Answer

9.8 meters per second squared

Answer

4.9 meters per second squared

Answer

2.45 meters per second squared

Answer

1.225 meters per second squared

Question 8

Which of the following forces is responsible for holding atoms together?

Accepted Answer

Strong nuclear force

Answer

Gravitational force

Answer

Electromagnetic force

Answer

Weak nuclear force

Question 9

A force of 10 N acts upon an object with a mass of 2 kg. What is the acceleration experienced by the object?

Accepted Answer

2 m/s²

Answer

1 m/s²

Answer

5 m/s²

Answer

10 m/s²

Question 10

A sound wave has a frequency of 500 Hz and a wavelength of 0.5 m. Determine the speed of the sound wave.

Accepted Answer

250 m/s

Answer

100 m/s

Answer

500 m/s

Answer

1000 m/s

Question 11

As a beam of light travels from air into water, what occurs to its speed?

Accepted Answer

It decreases

Answer

It increases

Answer

It remains the same

Answer

It reverses direction

Question 12

Which of the following is not recognized as a fundamental force in physics?

Accepted Answer

Frictional force

Answer

Gravitational force

Answer

Electromagnetic force

Answer

Nuclear force

Question 13

Which physical quantity has both magnitude and direction?

Accepted Answer

Displacement

Answer

Mass

Answer

Temperature

Answer

Power

Question 14

Which type of friction occurs when an object is stationary on a surface?

Accepted Answer

Static friction

Answer

Kinetic friction

Answer

Rolling friction

Answer

Viscous friction

Question 15

A car traveling at 20 m/s applies the brakes and comes to a stop in 10 seconds. What is its acceleration?

Accepted Answer

-2 m/s²

Answer

-1 m/s²

Answer

1 m/s²

Answer

2 m/s²

Question 16

Momentum is defined as:

Accepted Answer

Mass multiplied by velocity

Answer

Force multiplied by time

Answer

Energy divided by time

Answer

Displacement divided by velocity

Question 17

Which unit is used to measure momentum?

Accepted Answer

Kilograms-meters per second

Answer

Newton-seconds

Answer

Joules

Answer

Watts

Question 18

Which factor does NOT influence the magnitude of friction?

Accepted Answer

Velocity

Answer

Normal force

Answer

Surface roughness

Answer

Coefficient of friction

Question 19

A rocket launches into space, generating an upward thrust force of 50,000 Newtons. If the rocket's mass is 2,000 kilograms, what's its acceleration during launch?

Accepted Answer

25 m/s²

Answer

2.5 m/s²

Answer

500 m/s²

Answer

5,000 m/s²

Question 20

A 10 N force is applied to an object of mass 2.0 kg. Determine its acceleration.

Accepted Answer

2 m/s²

Answer

5 m/s²

Answer

10 m/s²

Answer

15 m/s²

Question 21

Which of the following is a vector quantity?

Accepted Answer

Acceleration

Answer

Distance

Answer

Speed

Answer

Mass

Question 22

According to Newton's second law of motion, the acceleration of an object is directly proportional to:

Accepted Answer

The net force acting on it and inversely proportional to its mass

Answer

Its mass and inversely proportional to the net force acting on it

Answer

Its velocity

Answer

The distance it travels

Question 23

The momentum of a system is conserved when:

Accepted Answer

No external forces act on the system

Answer

The total force acting on the system is zero

Answer

The system is in equilibrium

Answer

The individual momentum of each object in the system remains constant

Question 24

Which of the following is NOT a type of energy?

Accepted Answer

Velocity

Answer

Kinetic energy

Answer

Potential energy

Answer

Heat energy

Question 25

The efficiency of a machine is defined as:

Accepted Answer

Output work / Input work

Answer

Input work / Output work

Answer

Work done / Power used

Answer

Power used / Work done

Question 26

Which of the following is a characteristic of simple harmonic motion?

Accepted Answer

Periodicity

Answer

Constant acceleration

Answer

Constant velocity

Answer

Linear displacement

Question 27

In two-dimensional motion, what property do velocity and displacement share?

Accepted Answer

They both have magnitude and direction.

Answer

They are both scalar quantities.

Answer

They both have only magnitude.

Answer

They are both dimensionless.

Question 28

A ball is thrown vertically upward with an initial velocity of 20 m/s. What is its instantaneous velocity at the highest point of its trajectory?

Accepted Answer

0 m/s

Answer

10 m/s

Answer

20 m/s

Answer

-20 m/s

Question 29

Which of the following is the SI unit of force?

Accepted Answer

Newton (N)

Answer

Joule (J)

Answer

Watt (W)

Answer

Kilogram (kg)

Question 30

State the principle of conservation of momentum.

Accepted Answer

The total momentum of an isolated system remains constant

Answer

The total energy of an isolated system remains constant

Answer

The total angular momentum of an isolated system remains constant

Answer

The total mass of an isolated system remains constant

Question 31

An object moves with a constant velocity of 5 m/s towards the north. What is the object's acceleration?

Accepted Answer

0 m/s²

Answer

9.8 m/s² downwards

Answer

5 m/s² towards the north

Answer

5 m/s² towards the south

Question 32

An object is thrown vertically upward with an initial velocity of 10 m/s. What is the object's velocity at the highest point of its trajectory?

Accepted Answer

0 m/s

Answer

10 m/s downward

Answer

10 m/s upward

Answer

5 m/s upward

Question 33

A car travels at a constant speed of 20 m/s. The driver applies the brakes, causing the car to decelerate at 5 m/s². How far does the car travel before coming to a stop?

Accepted Answer

40 m

Answer

60 m

Answer

20 m

Question 34

A ball is dropped from a height of 50 m. What is the ball's velocity just before it hits the ground (ignoring air resistance)?

Accepted Answer

31.3 m/s

Answer

40 m/s

Answer

10 m/s

Answer

20 m/s

Question 35

A satellite orbits the Earth in a circular path. Which force is responsible for keeping the satellite in orbit?

Accepted Answer

Gravitational force

Answer

Magnetic force

Answer

Centrifugal force

Answer

Frictional force

Question 36

An object is moving with a constant velocity. Which of the following statements is true about the net force acting on the object?

Accepted Answer

The net force is zero.

Answer

The net force is always in the same direction as the velocity.

Answer

The net force is always in the opposite direction of the velocity.

Answer

The net force is perpendicular to the velocity.

Question 37

Which of the following forces is **not** a contact force?

Accepted Answer

Gravitational force

Answer

Normal force

Answer

Frictional force

Answer

Tension force

Question 38

Which of the following is a unit of momentum?

Accepted Answer

kg m/s

Answer

J

Answer

m/s

Answer

N

Question 39

According to Newton's First Law of Motion, an object at rest will remain at rest, and an object in motion will continue to move with constant velocity unless acted upon by an outside force. This is also known as:

Accepted Answer

Inertia

Answer

Centripetal force

Answer

Momentum

Answer

Gravity

Question 40

The force of friction is always parallel to the direction of motion and opposite to the direction of the object's motion.

Accepted Answer

True

Answer

Sometimes true, sometimes false

Answer

False

Question 41

The relationship between force, mass, and acceleration is given by Newton's Second Law of Motion, which states that:

Accepted Answer

F = ma

Answer

F = kx

Answer

F = mv

Question 42

The total mechanical energy of a system is conserved, meaning that it:

Accepted Answer

Remains constant as long as no non-conservative forces act on the system

Answer

Is always zero

Answer

Decreases over time

Answer

Increases over time

Question 43

Momentum is a:

Accepted Answer

Vector quantity that describes the motion of an object

Answer

Constant quantity that describes the energy of an object

Answer

Scalar quantity that describes the amount of matter in an object

Answer

Negative quantity that describes the force acting on an object

Question 44

Which of the following is an example of a centripetal force?

Accepted Answer

The force that keeps a car moving in a circular path

Answer

The force of air resistance pushing the car forward

Answer

The force of gravity pulling the car down

Answer

The force of friction between the car's tires and the road

Question 45

The work done by a force is equal to:

Accepted Answer

The force applied multiplied by the displacement of the object in the direction of the force

Answer

The force applied multiplied by the time over which the force is applied

Answer

The force applied multiplied by the mass of the object

Question 46

A ball is launched vertically upward. At the highest point of its trajectory, what is its velocity?

Accepted Answer

Zero

Answer

Maximum positive

Answer

Maximum negative

Answer

Unchanged from the launch velocity

Question 47

A car travels at a constant speed of 20 m/s for 10 seconds. What is its acceleration?

Accepted Answer

Zero

Answer

0.5 m/s^2

Answer

-2 m/s^2

Answer

2 m/s^2

Question 48

Which of the following is NOT a vector quantity?

Accepted Answer

Mass

Answer

Acceleration

Answer

Displacement

Answer

Force

Question 49

Which of the following forces is conservative?

Accepted Answer

Gravitational force

Answer

Tension force

Answer

Normal force

Answer

Frictional force

Question 50

Which of the following is the SI unit of force?

Accepted Answer

Newton

Answer

Joule

Answer

Kilogram

Answer

Meter

Question 51

Which of the following is true about an object in equilibrium?

Accepted Answer

The net force acting on it is zero.

Answer

Its velocity is always increasing

Answer

Its displacement is always zero

Answer

Its acceleration is changing

Question 52

What is the formula for calculating the average velocity of an object?

Accepted Answer

Displacement divided by time

Answer

Distance divided by time

Answer

Time divided by displacement

Answer

Velocity divided by distance

Question 53

A car is traveling at a constant speed. What would a graph of its displacement versus time look like?

Accepted Answer

A straight line with a positive slope

Answer

A circular curve

Answer

A parabolic curve

Answer

A straight line with a negative slope

Question 54

What condition leads to an object accelerating upwards?

Accepted Answer

The upward force is greater than the downward force.

Answer

The upward force is equal to the downward force.

Answer

The downward force is greater than the upward force.

Answer

There is no force acting on the object.

Question 55

A car is traveling at 60 miles per hour. What is its velocity in meters per second (approximately)?

Accepted Answer

26.8 m/s

Answer

100 m/s

Answer

15 m/s

Answer

50 m/s

Question 56

Which of the following is considered a fundamental force of nature?

Accepted Answer

Gravity

Answer

Normal force

Answer

Friction

Answer

Tension

Question 57

A projectile is launched straight up. At its highest point, what force is acting on it?

Accepted Answer

Gravity

Answer

Air resistance

Answer

Tension

Answer

Normal force

Question 58

What is the formula for calculating momentum?

Accepted Answer

Momentum = mass × velocity

Answer

Momentum = energy × time

Answer

Momentum = force × time

Question 59

Which of the following is NOT a form of energy?

Accepted Answer

Work

Answer

Heat

Answer

Light

Answer

Kinetic energy

Question 60

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

Accepted Answer

4 m/s²

Answer

1 m/s²

Answer

100 m/s²

Question 61

A 10 kg object is at rest on a horizontal surface. A force of 20 Newtons is applied horizontally to the object. What is the object's acceleration?

Accepted Answer

2 m/s²

Answer

0.5 m/s²

Answer

10 m/s²

Answer

200 m/s²

Question 62

A ball is thrown vertically upwards with an initial velocity of 15 m/s.  What is the ball's velocity at its highest point?

Accepted Answer

0 m/s

Answer

15 m/s

Answer

9.8 m/s

Answer

-15 m/s

Question 63

A roller coaster car starts at rest at the top of a hill and rolls down to the bottom.  Which of the following best describes the energy transformations that occur?

Accepted Answer

Gravitational potential energy is converted into kinetic energy.

Answer

Thermal energy is converted into potential energy.

Answer

Kinetic energy is converted into gravitational potential energy.

Question 64

A 2 kg object is lifted vertically 3 meters.  How much work is done against gravity?

Accepted Answer

58.8 J

Answer

6 J

Answer

9.8 J