CBSE 11 Physics · U3
Laws of Motion
CBSE Class 11 Physics Unit III: force, inertia, Newton's laws, momentum, impulse, conservation of linear momentum, equilibrium, friction, and circular-motion dynamics.
Test yourself
A focused, distraction-free run through 25 multiple-choice questions. Hints if you need them; your score at the end.
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Topic 3.1
Force, Inertia and Newton's Laws
Intuitive concept of force, inertia, Newton's first law, second law, third law, and free-body diagrams.
Topic 3.2
Momentum, Impulse and Newton's Second Law
Linear momentum, impulse, force as rate of change of momentum, and force-time graphs.
Topic 3.3
Conservation of Linear Momentum
Isolated systems, recoil, explosions, and one-dimensional collision applications.
Item 1
Open
Item 2
Open
Item 3
Open
Item 4
Open
Item 5
Open
Item 6
Open
Item 7
Open
Item 8
Open
Item 9
Open
Item 10
Open
Topic 3.4
Equilibrium and Friction
Equilibrium of concurrent forces, static and kinetic friction, laws of friction, rolling friction, and lubrication.
Item 1
Open
Item 2
Open
Item 3
Open
Item 4
Open
Item 5
Open
Item 6
Open
Item 7
Open
Item 8
Open
Item 9
Open
Item 10
Open
Topic 3.5
Dynamics of Uniform Circular Motion
Centripetal force, level circular roads, banked roads, and examples of circular motion.
Item 1
Open
Item 2
Open
Item 3
Open
Item 4
Open
Item 5
Open
Item 6
Open
Item 7
Open
Item 8
Open
Item 9
Open
Item 10
Open