GCSE/IGCSE Physics revision notes section 1



What is Scalar

Scalar quantity only has magnitude (number value)

Eg. 10,000 km

 

What is Vector

Vector quantity has both magnitude and direction

Eg. 10,000 km, north

 

Resultant of 2 vectors

Finding resultant of 2 vectors means adding them or finding the sum value

There are 2 ways to find the resultant

Pythagorean Theorem

Trigonometry

 

Examples of Vector

Distance

Displacement

Velocity

Acceleration

Force

 

Examples of Scalar

Time

Speed

Temperature

Volume

Mass

 

How to measure distance with ruler

Determine the smallest graduation on the scale

Subtract one extremity from the other extremity

Eg. Subtract the smaller number from the larger number

9-0=9

 

Recognize and use the conventions

Signs

Symbols

Systematic

 





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