Forces: Definition And Types

This section defines force, covers its types, and explains how they influence the motion of objects.

What Is Force?

Force is a push or pull that can change an object's motion and is characterized by its magnitude and direction.

Types Of Forces

This section introduces the concept of forces and categorizes them into contact and non-contact forces.

Contact Forces

This section introduces contact forces, discussing their types such as friction, tension, normal force, and applied force, which require physical contact between objects to exert their influence on motion.

Non-Contact Forces

Non-contact forces act at a distance without physical contact, including gravitational, electromagnetic, and nuclear forces.

Newton’s Laws Of Motion

Newton’s Laws of Motion explain the relationship between forces and the motion of objects.

Newton’s First Law (Law Of Inertia)

Newton's First Law states that an object will remain at rest or in uniform motion unless acted upon by an external force.

Newton’s Second Law (Law Of Acceleration)

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Newton’s Third Law (Action And Reaction)

Newton's Third Law states that for every action, there is an equal and opposite reaction.

Speed, Velocity, And Acceleration

This section introduces speed, velocity, and acceleration as fundamental concepts in motion, emphasizing their definitions, formulas, and differences.

Speed

This section focuses on speed, defining it as a measure of how fast an object moves, and introduces related concepts including velocity and acceleration.

Velocity

Velocity is the measure of an object's speed in a specific direction, making it a vector quantity.

Acceleration

Acceleration is defined as the rate of change of an object’s velocity over time, and it is a vector quantity.

Motion And Graphs

This section focuses on understanding how distance and velocity change over time, represented through distance-time and velocity-time graphs.

Distance-Time Graph

A distance-time graph visually represents how the distance traveled by an object changes over time, indicating the object's speed.

Velocity-Time Graph

A velocity-time graph depicts how the velocity of an object changes over time, illustrating concepts like acceleration and displacement.

Work, Energy, And Power

This section explores the concepts of work, energy, and power, explaining their definitions and formulas.

Work

This section introduces the concept of work in physics, explaining its definition, formula, and significance in relation to force and motion.

Energy

This section covers the concepts of work, energy, and power, explaining their definitions and relationships in physics.

Kinetic Energy (Ke)

Kinetic Energy is the energy an object possesses due to its motion, determined by its mass and speed.

Potential Energy (Pe)

Potential energy (PE) is the stored energy in an object due to its position or state.

Power

Power is the rate at which work is done or energy is transferred.

Friction And Its Effects

This section covers the concept of friction, its types, and the factors affecting it.

What Is Friction?

Friction is the force that opposes the motion of an object and is crucial in understanding how objects interact with surfaces.

Types Of Friction

This section introduces the various types of friction and their impact on object motion.

Factors Affecting Friction

This section discusses the primary factors that influence friction, including surface roughness and normal force.