PP - Def For U Card (1) (1) (1)

Def For U Card

MARDHIAH●ZAKIAH●AZLIDA

Thi s Photo by Unknown author is l icensed under CC
BY.

TOPIC 1 : PHYSICAL

QUANTITY & MEASUREMENT

Sub Topic Definition
Physical Quantity Quantity that can be measured

Base Quantity Physical quantities that cannot be derived from other physical
quantities.

Derived Quantity Physical quantities which are a combination of base quantities
express in term of base quantities.

Scalar quantities Physical quantities with magnitude or size only.
Vector quantities Physical quantities with direction and magnitude.

TOPIC 2 : LINEAR MOTION

Sub Topic Definition Formula Unit
Distance, d The total length travelled by an object Meter
from one position to another.
Displacement, s The shortest distance from a reference (m)
point.
Meter
(m)

Speed, v The displacement per unit time or rate of ,
change of displacement.
ms-1

TOPIC 2 : LINEAR MOTION

Sub Topic Definition Formula Unit

Velocity, v The displacement per unit time or rate of , ms-1
Acceleration change of displacement. −2

Acceleration, a is the rate of change of = ,

velocity. Thi s Photo by Unknown author is l icensed under CC Acceleration, a
BY-NC. = −



a = acceleration

v = final velocity

u = initial velocity

t = time

TOPIC 2 : LINEAR MOTION

Equation of Motion S = distance @ displacement (unit in m or km)
v = final velocity (unit in m/s or km/h)
a) = 1 + u = initial velocity (unit in m/s or km/h)
a = acceleration ( unit in m/s2 or km/h2)
2 t = time (unit in second or hour)

b) 2 = 2 + 2

c) = −


TOPIC 3 : SOLID AND FLUID

Sub Topic Definition Formula Unit
Mass, m kg
Weight, W Amount of matter in the object.
Newton,
Force Force of gravity acting on the N

object. Newton,
N or
Force is a vector quantity as its has F = ma kgms-2

both magnitude and direction. F = Force

m = Mass (kg)

a = Acceleration (ms-2)

TOPIC 3 : SOLID AND FLUID

Sub Topic Definition Formula Unit
Weight Weight of an object is the force of W = mg Newton,
gravity that acts on it. Value of g = 9.81 ms-2 N

Vertical force, Fy = Newton,
N
Horizontal force, = Newton,
N
Fx Product of the force and the Moment = Force X Nm
Moment
Perpendicular Distance
perpendicular distance of its line of

action from that point.

TOPIC 4 : WORK, ENERGY AND POWER

Sub Topic Definition Formula Unit
Work Work is done when a force causes W=Fxs
an object to move in the same W = work (unit : joule, J) Nm or
direction as the force. F = Force (unit: Newton, N) Joule (J)
s = displacement (unit:
meter, m)

Energy When the applied force is at an W = F cosθ x s Nm or
angle, θ to the displacement, s, the Joule (J)
work done can be calculated by
the formula. Nm or
Joule (J)
Energy is the capacity to do work.

TOPIC 4 : WORK, ENERGY AND POWER

Sub Topic Definition Formula Unit
Kinetic Energy Kinetic energy is the energy of Nm or
an object due to its motion = 1 2 Joule (J)
2

Ek = Kinetic energy (joule,
J)

m = mass (kg)
v = velocity (ms-1)

TOPIC 4 : WORK, ENERGY AND POWER

Sub Topic Definition Formula Unit
Potential Energy Potential energy is the energy Ep = mgh Nm or
stored in an object due to its Joule (J)
position or its state. Ep = Potential energy (unit : J)
m = mass of an object(unit : kg)
g = gravity acceleration (unit : ms2)

= 9.81ms-2
h = height of an object (unit : m)

TOPIC 4 : WORK, ENERGY AND POWER

Sub Topic Definition Formula Unit
Power Power is the rate at which Nm or
work is done. Power, P = Joule (J)


W = work done (unit : J

or Nm)

t = time taken (unit :

second, s)

P = Fv

P = power

F = force

V = velocity

TOPIC 4 : WORK, ENERGY AND POWER

Sub Topic Definition Formula Unit

Efficiency The efficiency of a system is the , = 100% Percent
(%)
capability of the system to do work.
Po = Power output

Pi = Power input

E = Energy

W = work

μ = 100%



Eo = Energy output
Ei = Power input

μ = 100%



Wo = Work output
Wi = Work input

TOPIC 5 : SOLID AND FLUID

Sub Definition Formula Unit
Topic
Density Density is a measure of how much mass is kg/m3
= (kgm-3) or
contained in given unit volume. = density
= mass (kg) gcm-3
= volume(m3)
W = ρVg

W = weight

ρ= density of liquid
V = volume of liquid
displaced
g = gravitational
acceleration
(9.81ms-2)

TOPIC 5 : SOLID AND FLUID

Sub Topic Definition Formula Unit
Relative Density Also known as specific density. NO UNIT

Pressure Pressure is defined as force per unit Pressure = Nm-2, N/m2
area. or Pascal
(Pa)

=



TOPIC 5 : SOLID AND FLUID

Sub Topic Definition Formula Unit
Pressure Pressure is defined as force per P = ρgh Nm-2, N/m2
unit area. P = pressure, Pa or Pascal
ρ= density, kgm-3
g = 9.81ms-2 (Pa)

h = height, m Nm-2, N/m2
or Pascal
P in = P out
(Pa)

TOPIC 6 : TEMPERATURE AND HEAT

Sub Topic Definition Formula Unit
Heat Heat is the amount of thermal energy that Q = mcθ Joule (J)
can be transferred from one object to one
Temperature another. Q = energy of heat, Joule (J)
m = mass (kg)
Temperature is the degree of hotness (or C = specific heat capacity
coldness) of an object. (J/kgoC)
Θ = temperature (oC)

Tk=Tc + 273
Tk = temperature in unit kelvin Kelvin (K)
Tc = temperature in
unit celcius

TOPIC 6 : TEMPERATURE AND HEAT

Sub Topic Definition Formula Unit
Heat Capacity JoC-1
Heat capacity of a substance is defined as the amount

of heat required to raise its temperature by 1oC.

Specific Heat Specific heat capacity defined as the heat required J/kg oC = J kg-1 oC-1
Capacity raising the temperature of 1kg of substance by 1oC. or

kJ/kg oC = kJ kg-1 oC-1
or

kcal/kg oC = kcal kg-1 oc-1

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