O level/IGCSE Physics

This is an introduction to O level/IGCSE Physics

4 × 10³

4000

5390

5.39 × 10³

SI Unit of length

metre (m)

What force opposes motion?

friction

the apparent shift in the position of an object when viewed from different angles, which can lead to inaccuracies in measurement.

parallax error

10^-9 m / 0.000000001 metres.

nanometre

10^9 m or 1,000,000,000 (1 billion) metres

gigametre

error introduced by the system (associated with faulty equipment or flawed experimental design)

systematic error

Has magnitude (size) only and no direction.

Scalar quantity

Has both magnitude and direction.

vector quantity

The resultant force of two forces acting at right angles to each other can be calculated by using the

Pythagorean theorem

the direction of two forces acting at right angles to each other can be calculated by

tan theta = Fy/Fx

How to calculate distance in a speed-time graph?

Calculate the area under the graph.

SI unit of speed

m/s

The SI unit of acceleration

m/s^2

Density is expressed using the symbol

ρ

Gravity is expressed using the symbol

g

Volume is expressed using the symbol

V

Change is expressed using the symbol

Δ

Force is expressed using the symbol

F

Initial velocity is expressed using the symbol

u

Final velocity (in conjunction with initial velocity) is expressed using the symbol

v