Force and Motion — Revision Notes
NIOS · Class 10 · Science & Tech
Force and Motion revision notes for NIOS Class 10 Science & Tech: 4 topics in quick points. Part of the NIOS Class 10 Science & Tech syllabus.
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Key Topics to Revise
Force, Motion, and Balanced Forces
- Force is a push or pull acting on an object.
- Applying force can make an object move from rest, change its speed, change its direction, or change its shape.
- Balanced forces do not change the state of rest or motion of an object.
Inertia, Mass, and Newton's First Law
- Inertia is the tendency of objects to stay at rest or to keep moving with the same velocity.
- Mass is a measure of inertia.
- Massive objects resist changes in motion more than lighter objects.
Momentum and Newton's Second Law
- Momentum depends on both mass and velocity.
- The impact produced by an object depends on both its mass and velocity.
- Momentum has both magnitude and direction, and its direction is the same as velocity.
Newton's Third Law and Conservation of Momentum
- According to Newton's third law, to every action there is an equal and opposite reaction.
- Action and reaction always act on two different bodies.
- Action and reaction are simultaneous.
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