Force and Motion
NIOS · Class 10 · Science & Tech
Complete topic list for Force and Motion in NIOS Class 10 Science & Tech. Key concepts, sub-topics, and what to focus on for board exams.
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Force and Its Effects
- Force is a push or pull acting on an object that can change its state of motion or shape
- Effects of force: make object move from rest, change speed, change direction, change shape
- Balanced forces: equal forces acting in opposite directions, no change in motion but can change shape
Newton's Laws of Motion
- First Law (Law of Inertia): Objects at rest stay at rest, objects in motion stay in motion unless acted upon by unbalanced force
- Inertia is the tendency of objects to resist change in their state of motion
- Mass is a measure of inertia - heavier objects have more inertia
Conservation of Momentum
- Total momentum of isolated system remains constant before and after collision
- No external force means momentum is conserved
- Applications: recoil of gun, rocket propulsion, collision problems
Friction
- Friction opposes motion between surfaces in contact
- Static friction prevents motion, kinetic/sliding friction opposes ongoing motion
- Static friction > sliding friction > rolling friction
Key Concepts
Central concept: Force and Motion
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