Page 18 - Science E-Book Prep.3 2024-2025 1st term unit1_Neat

Science Department
Prep.3

Lesson 3: "Physical quantities
(Scalers and Vectors)"

-Each physical quantity is related to a measurement unit that
characteristic to it

*All physical quantities are classified into two types:

Scalar Vector

Scalar physical quantities Vector physical quantities
It is enough to identify its It is not enough to identify its
magnitude only by giving its magnitude only by giving its
numeric value and measuring numeric value and measurement
unit. units, but also a direction as well.

It is the quantity that has It is the quantity that has a
magnitude only and it has no magnitude as well as direction
direction.

Ex: Mass kilogram Ex: Force Newton
Length meter
Time Acceleration m/s2
second Velocity m/s
Temperature Co or Ko
Energy joule or m or km

calorie Displacement.
Distance meter or Km
Speed m/s or km/h

First Term 17