Newton's Laws of Motion: Interactive Learning Quizzes for Biomechanics

Question 1

An object is moving at a constant speed and direction. What is the net force acting on the object?

Accepted Answer

Zero

Answer

Greater than zero

Answer

Less than zero

Answer

Cannot be determined

Question 2

How does Newton's Second Law explain the motion of a soccer ball when it is kicked?

Accepted Answer

The soccer ball's acceleration is directly proportional to the force applied to it.

Answer

The soccer ball's acceleration is inversely proportional to the force applied to it.

Answer

The soccer ball's momentum remains constant as it moves through the air.

Question 3

According to Newton's Third Law of Motion, when a force is applied to a stationary object, what type of force acts on the object in response?

Accepted Answer

Force with the same magnitude and opposite direction

Answer

No force

Answer

Force with the same direction and magnitude

Answer

Force with a smaller magnitude and the same direction

Question 4

A 5 kg object experiences a 10 N force. What is the object's acceleration?

Accepted Answer

2 m/s²

Answer

0.2 m/s²

Answer

5 m/s²

Question 5

According to Newton's First Law of Motion, what happens to an object if no external force acts on it?

Accepted Answer

It remains at rest or moves with constant speed.

Answer

It accelerates.

Answer

It changes direction.

Answer

It loses momentum.

Question 6

A cyclist accelerates from rest at a constant rate of 2 m/s² for 10 seconds. What is the cyclist's velocity after 10 seconds?

Accepted Answer

20 m/s

Answer

40 m/s

Answer

5 m/s

Answer

10 m/s

Question 7

Which of the following is NOT considered a fundamental force in nature?

Accepted Answer

Friction

Answer

Electromagnetism

Answer

Nuclear force

Answer

Gravity

Question 8

Which of the following statements about Newton's laws is true?

Accepted Answer

They apply to all objects in the universe, regardless of their size or velocity.

Answer

They only apply to objects in a vacuum.

Answer

They only apply to objects moving at low speeds.

Answer

They only apply to objects on Earth.

Question 9

Clarity: According to Newton's first law of motion, an object remains at rest or in uniform motion unless acted upon by an unbalanced force. True or False?

Accepted Answer

True

Answer

False

Question 10

Accessibility and Correctness: If an object's velocity is constant, what is the net force acting upon it?

Accepted Answer

Zero

Answer

Negative

Answer

Insufficient information provided

Answer

Positive

Question 11

Refined Distractors: Which scenario best exemplifies Newton's third law of motion?

Accepted Answer

When you push a wall and it pushes back on you with equal force

Answer

A car accelerates when the gas pedal is pressed

Answer

A ball thrown upward returns due to gravity

Question 12

Unit Conversion: Which of these is NOT a valid unit of force?

Accepted Answer

Kilogram

Answer

Newton

Answer

Pound

Answer

Dyne

Question 13

Newton's first law of motion states that:

Accepted Answer

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Answer

The acceleration of an object is directly proportional to the net force acting on the object.

Answer

For every action, there is an equal and opposite reaction.

Question 14

Which of the following is NOT a characteristic of force?

Accepted Answer

Velocity

Answer

It can cause a change in motion.

Answer

It can be applied over a distance.

Answer

It is measured in newtons.

Question 15

What is the relationship between force, mass, and acceleration?

Accepted Answer

Force is directly proportional to mass and acceleration.

Answer

Force is inversely proportional to mass and acceleration.

Answer

Mass is inversely proportional to force and acceleration.

Question 16

Which of the following is an example of Newton's third law of motion?

Accepted Answer

When you push against a wall, the wall pushes back on you with the same force.

Answer

When you drop a ball, it accelerates towards the ground.

Answer

When you kick a soccer ball, it moves in the direction of your kick.

Question 17

What is the SI unit of force?

Accepted Answer

Newton

Answer

Second

Answer

Meter

Answer

Kilogram

Question 18

Which of the following factors does NOT affect the acceleration of an object?

Accepted Answer

Shape of the object

Answer

Magnitude of the force applied to the object

Answer

Mass of the object

Answer

Direction of the force applied to the object

Question 19

What is the difference between speed and velocity?

Accepted Answer

Speed is the rate of change of distance, while velocity is the rate of change of displacement.

Answer

Velocity is the rate of change of distance, while speed is the rate of change of displacement.

Answer

Speed is a vector quantity, while velocity is a scalar quantity.

Question 20

Which of the following is an example of a projectile?

Accepted Answer

A ball thrown in the air

Answer

A book sitting on a table

Answer

A person walking on the sidewalk

Answer

A car driving on the road

Question 21

What is the trajectory of a projectile?

Accepted Answer

A parabola

Answer

An ellipse

Answer

A circle

Answer

A straight line

Question 22

A sprinter accelerates from rest to a top speed of 10 m/s in 2 seconds. What is the sprinter's average acceleration?

Accepted Answer

5 m/s²

Answer

10 m/s²

Answer

20 m/s²

Answer

0.2 m/s²

Question 23

A soccer ball is kicked with a force of 20 Newtons. What will happen to the ball if the same force is applied over a longer period of time?

Accepted Answer

The ball will accelerate for a longer duration and achieve a higher final velocity.

Answer

The ball will move with a constant velocity.

Answer

The ball will experience a greater change in momentum.

Question 24

A high jumper leaps into the air. What force brings the jumper back down to the ground?

Accepted Answer

Gravity

Answer

Air resistance

Answer

Muscle contraction

Answer

Inertia

Question 25

A swimmer pushes off from the wall of a pool. Which of Newton's Laws explains the swimmer's forward motion?

Accepted Answer

Newton's Third Law

Answer

None of the above

Answer

Newton's First Law

Answer

Newton's Second Law

Question 26

A heavy weightlifter struggles to lift a barbell. What concept explains why the barbell is difficult to move?

Accepted Answer

Inertia

Answer

Momentum

Answer

Gravity

Answer

Friction

Question 27

A tennis player hits a ball with a racket. Which of the following is NOT a factor that determines the ball's acceleration?

Accepted Answer

The color of the ball

Answer

The mass of the ball

Answer

The force applied by the racket

Answer

The time the racket is in contact with the ball

Question 28

A long jumper takes off from the ground. Which force is responsible for slowing down the jumper's forward motion in the air?

Accepted Answer

Air resistance

Answer

Gravity

Answer

Muscle contraction

Question 29

A cyclist accelerates forward by pedaling. What is the action-reaction pair that enables this motion?

Accepted Answer

The cyclist's legs push on the pedals, and the pedals push back on the cyclist's legs.

Answer

The cyclist pushes on the ground, and the ground pushes back on the cyclist.

Answer

The cyclist's body pushes against the air, and the air pushes back on the cyclist.

Question 30

Two athletes, one with a mass of 60 kg and the other with a mass of 80 kg, are running at the same speed. Which athlete has greater momentum?

Accepted Answer

The athlete with a mass of 80 kg.

Answer

The athlete with a mass of 60 kg.

Answer

It depends on their direction of motion.

Answer

Both athletes have the same momentum.

Question 31

A gymnast performs a somersault in the air. What allows the gymnast to change their body position without external forces acting on them?

Accepted Answer

Conservation of angular momentum

Answer

Newton's First Law of Motion

Answer

Newton's Third Law of Motion