Laws of Motion — Class 11 Maharashtra HSC Physics revision notes
A 7-page visual revision sheet for Laws of Motion, written for Class 11 Maharashtra HSC Physics. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.
Page 1 as PDF
Laws of Motion in one look
from Aristotle's mistake to Newton's three laws, and everything a force can do to a body
Aristotle's fallacy, Newton's first law
- Aristotle: a force is needed to keep a body moving
- Galileo: the ball stops from opposing forces, friction and air drag
- motion itself needs no force to continue
- first law: a body keeps its state unless a net external force acts
- that stubbornness is inertia; mass is its measure
- first law defines an inertial frame, where no net force means constant velocity
- bus starts, you lurch back; it brakes, you lurch forward
Newton's second law, impulse
- net force, the rate of change of momentum
F = dp/dt - for constant mass
F = ma - momentum, defined
p = mv - impulse, constant force
J = FΔ t = Δ p - impulse, varying force
J = ∫ F dt
Page 1 of 7. The full sheet, all 7 pages, opens free in the app.
What this Laws of Motion sheet covers
- Aristotle's fallacy, Newton's first law
- Newton's second law, impulse
- net force, the rate of change of momentum
- for constant mass
- momentum, defined
- impulse, constant force
- impulse, varying force
- Newton's third law
- The four fundamental forces
- Inertial and non-inertial frames
- Apparent weight in a lift
- lift accelerating upward
- lift accelerating downward
- constant velocity, a = 0
- free fall, a = g
- What a balance reads
- Free-body diagrams
- Constrained motion
- Conservative and non-conservative forces
- Work-energy theorem
- work by a variable force
- net work gives the change in KE
- conservative force only
- friction also acts
- Conservation of linear momentum
- no external force, total momentum
- two bodies
- recoil, gun and bullet
- Elastic and inelastic collisions
- Elastic
- Inelastic
- Coefficient of restitution
- separation over approach, between 0 and 1
- perfectly elastic
- perfectly inelastic, v_1=v_2
- ball dropped on a floor, n-th bounce
- After a head-on elastic collision
- body 1
- body 2
- Special cases, target at rest
- Collisions in use
- Torque, couple, equilibrium
- Stable, unstable, neutral
- Centre of mass and centre of gravity
- Changing mass: rockets, chains, sand
- Traps that cost marks
- Tricks that save time
How CapCompass uses this sheet
These notes are not a standalone PDF. CapCompass plans Physics chapter by chapter against your real exam dates and free hours, and when the plan reaches Laws of Motion the sheet opens inside the study block itself — at the page covering the sub-topic that block is on, with the timer still running. Revision arrives at the moment the plan says revise, instead of having to be gone looking for.