18th August 2020

# JSS 2 : PHYSICS : WEEK 6

NEW APPROACH

WEEK/TERM: THIRD TERM/WEEK 6

DATE: 05.05.2020

CLASS: J.S.S 2

SUBJECT: PHYSICS

TOPIC: REVIEW ON POSITION (distance and displacement and vectors and scalar quantities)

REFERENCE:

BRIEF EXPLANATION:

Notes for the students (lesson one)

POSITION

The position of an object is the location in space of that object. It is a vector quantity. It is the distance and direction of an object from a particular reference point.

DISTANCE

Distance is a measure of gap an object has moved between two positions in space. It is a scalar quantity. Position is how far an object travelled from one position to another position.

DISPLACEMENT

Displacement is the change in the position of an object. Displacement has to do with distance and direction. It is a vector quantity. It is the distance covered by a body in a specified direction.

More examples

1. A boy walked a distance of 2km. = distance
2. A boy walked a distance of 5km due east = displacement

Lesson two

Scalars and vector

Scalar quantities are quantities that have magnitude (size) only. They have no direction. Examples of scalars are distance, time, speed mass, work, energy, power etc.

Vectors

Vector quantities are those quantities that have both magnitude (size) and directions.

Vectors examples are displacement, force, magnetic field etc.

Exercises / Assignment

1. Position is the distance between two points – explain.
2. What is the difference between distance and displacement?
3. Complete the table below
 Quantity Types of quantity (vector or scalar) i. Position Ii Displacement Iii Distance Iv Time v Length vi Force