4. LAWS OF MOTION
The chapter discusses the laws of motion, emphasizing the concepts introduced by Galileo and Newton. It explains the significance of forces in motion, defining inertia, momentum, and the three laws of motion. Through examples and illustrations, it explores how these principles apply in various real-life scenarios, including the effects of friction, circular motion, and equilibrium.
Enroll to start learning
You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Inertia is the resistance of a body to change its state of motion, defined by Newton's first law.
- The second law of motion relates the force applied to an object to its mass and acceleration, encapsulated in the equation F = ma.
- The third law of motion states that for every action, there is an equal and opposite reaction.
Key Concepts
- -- Inertia
- The property of a body to resist changes to its state of rest or uniform motion unless acted upon by an external force.
- -- Momentum
- The product of an object's mass and its velocity, represented mathematically as p = mv.
- -- Newton's First Law of Motion
- A body at rest stays at rest, and a body in motion continues in uniform motion unless acted upon by an external force.
- -- Newton's Second Law of Motion
- The acceleration of an object is directly proportional to the net external force acting on it and inversely proportional to its mass.
- -- Newton's Third Law of Motion
- For every action, there is an equal and opposite reaction; forces always occur in pairs.
- -- Friction
- The force that opposes the relative motion of two surfaces in contact.
- -- Equilibrium
- A state in which the net external force acting on a body is zero, resulting in the body being at rest or in uniform motion.
Additional Learning Materials
Supplementary resources to enhance your learning experience.