distance

SI Unit : m

Symbol: s

initial velocity

SI Unit: m/s

Symbol: u

final velocity

SI units: m/s

Symbol: v

acceleration

SI Unit: m/s²

Symbol: a

time

SI Units: s

Symbol: t

mass

SI unit: kg

Symbol: m 

volume

SI Unit: m³

Symbol: V

density

SI units: kg/m³

Symbol: ρ

wavelength

SI unit: m

Symbol: λ

frequency

SI unit: Hz

Symbol: f

velocity

SI unit: m/s

Symbol : v

moment

SI units: N/m

Symbol: M

force

SI unit: N

Symbol: F

area

SI unit: m²

Symbol: A

pressure

SI unit: N/m² / Pa

Symbol: P

Newton's 1st Law:

Inertia

if an object is at rest, it wants to remain at rest, and if it is moving , it wants to continue moving with constant speed unless  a resultant force acts on it.

Newton's 2nd Law:

F= ma

The acceleration of an object :

-is directly proportional to the dragging force acting on it.

-inversely proportional to the mass of the object.

SI Unit : kgm/s

Symbol: p

Energy cannot be created nor destroyed, but changed from one form to another

Work done / Energy

units : J (Joules)

Power

Symbol: P

units : J/s or W (Watts)

PE AT TOP = KE AT BOTTOM

PE LOST = KE GAINED

(in vacuum)

PE AT TOP = WORK DONE AGAINST AIR RESISTANCE + KE AT BOTTOM

(when air resistance is present)

Calculating Efficiency of energy

eff %=  useful energy  output    x 100

energy input  

eff %=  useful power  output    x 100

power input  

Law of Conservation of Momentum

TOTAL MOMENTUM BEFORE COLLISION IS EQUAL TO THE TOTAL MOMENTUM AFTER COLLISION, PROVIDED THAT NO EXTERNAL FORCE ACTS

Elastic Collision

When 2 objects hit each other and move separately after colliding

Inelastic Collision

Explosions

Stopping Time = Thinking Time + Braking Time

Stopping Distance = Thinking Distance + Braking Distance

Gravity / Freefall 

s = 1 gt²

2 

Specific Heat Capacity

unit: c

symbol: J/Kg °C

heat energy

unit : J

symbol: Q

change in temperature

unit : ºC

symbol: Δθ

Conduction

Convection

The transfer of heat by the circulation or

movement of the heated parts of a liquid

or gas

Radiation