Physics ยท Science General

Newtonian Mechanics and Forces

1,559 Questions

Newtonian mechanics studies the motion of objects and the physical laws governing them. This hub covers friction, gravitational force, inertia, and vector quantities. Mastering these fundamental physics concepts is essential for various government competitive exams.

Laws of motionFriction and inertiaVector and scalar quantitiesGravitational accelerationArchimedes principle

Newtonian Mechanics and Forces Questions

Multiple choice

What is the SI unit of force?

  1. Newton

  2. Joule

  3. Watt

  4. Kelvin
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The SI unit of force is the newton (N), which is defined as the force required to accelerate a mass of one kilogram by one meter per second squared.

Multiple choice

According to Newton's first law of motion, an object at rest will remain at rest, and an object in motion will continue moving with the same velocity, unless acted upon by an external force.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Newton's first law of motion, also known as the law of inertia, states that an object at rest will remain at rest, and an object in motion will continue moving with the same velocity, unless acted upon by an external force.

Multiple choice

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

  1. F = ma

  2. F = mv

  3. F = m/a

  4. F = a/m
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The relationship between force, mass, and acceleration is given by Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration.

Multiple choice

Which of the following is a scalar quantity?

  1. Displacement

  2. Velocity

  3. Temperature

  4. Angular momentum
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Temperature is a scalar quantity because it has only magnitude and no direction.

Multiple choice

What is the work done by a force?

  1. Force x Distance

  2. Force x Time

  3. Force x Velocity

  4. Force x Acceleration
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The work done by a force is equal to the force applied multiplied by the distance through which the force is applied in the direction of the force.

Multiple choice

Which of the following is a conservative force?

  1. Friction

  2. Gravity

  3. Tension

  4. Spring force
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A conservative force is a force that does not depend on the path taken by the object. Spring force is a conservative force because the work done by a spring force is independent of the path taken by the object.

Multiple choice

What is the relationship between momentum and impulse?

  1. Impulse = Momentum x Time

  2. Impulse = Momentum / Time

  3. Impulse = Momentum + Time

  4. Impulse = Momentum - Time
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Impulse is the product of force and time. According to Newton's second law of motion, impulse is equal to the change in momentum of an object.

Multiple choice

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

  1. Gravity

  2. Friction

  3. Tension

  4. Normal force
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Centripetal force is a force that acts on an object in circular motion, pulling it towards the center of the circle. Tension is an example of a centripetal force.

Multiple choice

Which of the following is not a fundamental force in nature?

  1. Gravitational Force

  2. Electromagnetic Force

  3. Weak Nuclear Force

  4. Strong Nuclear Force

  5. Frictional Force
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Frictional force is not a fundamental force but rather an emergent force arising from interactions between particles.

Multiple choice

Which of the following is an application of analysis in physics?

  1. Modeling the motion of a projectile

  2. Calculating the force of gravity

  3. Solving systems of linear equations

  4. Calculating the area of a region
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Analysis is used in physics to model the motion of objects, such as projectiles and planets.

Multiple choice

What is the name of the force that attracts objects to each other?

  1. Gravity

  2. Electromagnetism

  3. Strong nuclear force

  4. Weak nuclear force
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gravity is the name of the force that attracts objects to each other.

Multiple choice

What is the term used to describe the orientation of a spacecraft in space?

  1. Attitude

  2. Position

  3. Velocity

  4. Acceleration
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Attitude refers to the orientation of a spacecraft in space, typically described by its roll, pitch, and yaw angles.

Multiple choice

What is the force that causes objects to fall towards the Earth?

  1. Gravitational force

  2. Electromagnetic force

  3. Strong nuclear force

  4. Weak nuclear force
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The gravitational force is responsible for the attraction between objects with mass, causing them to fall towards each other.

Multiple choice

Which scientific principle is used to create the illusion of movement in a painting?

  1. The Law of Conservation of Energy

  2. The Law of Thermodynamics

  3. The Law of Motion

  4. The Law of Gravity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Law of Motion is used to create the illusion of movement in a painting. This principle states that an object in motion will remain in motion unless acted upon by an external force.

Multiple choice

What is the name of the law that states that 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?

  1. The law of inertia

  2. The law of acceleration

  3. The law of action and reaction

  4. The law of universal gravitation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The law of inertia is the first law of motion and it states that 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.