# Shared Flashcard Set

## Details

Physics Terms , SI Units , Symbols
List of Physics terms,
38
Physics
Not Applicable
10/07/2013

Term
 distance
Definition
 SI Unit : m Symbol: s
Term
 initial velocity
Definition
 SI Unit: m/s Symbol: u
Term
 final velocity
Definition
 SI units: m/s Symbol: v
Term
 acceleration
Definition
 SI Unit: m/s2 Symbol: a
Term
 time
Definition
 SI Units: s Symbol: t
Term
 mass
Definition
 SI unit: kg Symbol: m
Term
 volume
Definition
 SI Unit: m3 Symbol: V
Term
 density
Definition
 SI units: kg/m3 Symbol: ρ
Term
 wavelength
Definition
 SI unit: m Symbol: λ
Term
 frequency
Definition
 SI unit: Hz Symbol: f
Term
 velocity
Definition
 SI unit: m/s Symbol : v
Term
 moment
Definition
 SI units: N/m Symbol: M
Term
 force
Definition
 SI unit: N Symbol: F
Term
 area
Definition
 SI unit: m2 Symbol: A
Term
 pressure
Definition
 SI unit: N/m2 / Pa Symbol: P
Term
 Newton's 1st Law: Inertia
Definition
 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.
Term
 Newton's 2nd Law: F= ma
Definition
 The acceleration of an object : -is directly proportional to the dragging force acting on it. -inversely proportional to the mass of the object.
Term
 Newton's 3rd Law
Definition
 For every action there is an equal and opposite reaction.
Term
 Momentum
Definition
 SI Unit : kgm/s Symbol: p
Term
 Law of Conservation of Energy
Definition
 Energy cannot be created nor destroyed, but changed from one form to another
Term
 Work done / Energy
Definition
 units : J (Joules)
Term
 Power
Definition
 Symbol: P units : J/s or W (Watts)
Term
 PE AT TOP = KE AT BOTTOM PE LOST = KE GAINED (in vacuum)
Definition
Term
 PE AT TOP = WORK DONE AGAINST AIR RESISTANCE + KE AT BOTTOM (when air resistance is present)
Definition
Term
 Calculating Efficiency of energy
Definition
 eff %=  useful energy  output    x 100 energy input
Term
 calculating effiency of power
Definition
 eff %=  useful power  output    x 100 power input
Term
 Law of Conservation of Momentum
Definition
 TOTAL MOMENTUM BEFORE COLLISION IS EQUAL TO THE TOTAL MOMENTUM AFTER COLLISION, PROVIDED THAT NO EXTERNAL FORCE ACTS
Term
 Elastic Collision
Definition
 When 2 objects hit each other and move separately after colliding
Term
 Inelastic Collision
Definition
 When 2 objects hit each other and keep on moving together
Term
 Explosions
Definition
 When 2 objects are at rest and a force makes them move in opposite directions.
Term
 Stopping Time = Thinking Time + Braking Time
Definition
 Stopping Distance = Thinking Distance + Braking Distance
Term
 Gravity / Freefall
Definition
 s = 1 gt2 2
Term
 Specific Heat Capacity
Definition
 unit: c symbol: J/Kg °C
Term
 heat energy
Definition
 unit : J symbol: Q
Term
 change in temperature
Definition
 unit : ºC symbol: Δθ
Term
 Conduction
Definition
 it is the flow of heat through a material without any movement of the material itself
Term
 Convection
Definition
 The transfer of heat by the circulation or movement of the heated parts of a liquid or gas
Term