10 Januari 2018

Today, we continue with the new chapter. Chapter 3. Force.

no photos today, the photographer forget to take pictures, too absorb with lecture, maybe.. 

Definition of Force?
Push or pull exerted on object.

Formula?
F = ma

SI unit : Newton (N)

Weight versus Mass

COMPARISON	MASS (m)	WEIGHT W =mg
Measurement Tools:	Pan balance, a triple-beam balance, lever balance or electronic balance.	Spring balance
Type of Quantity	Scalar quantity	Vector quantity
Effect of gravity	Always constant (any time or places)	Depends on the gravity at that place.
Symbols	‘m’ for mass	‘W’ for weight
Measurement Unit	kg for kilogram	N for newton or (kg.m/s2)
About	The amount of matters presents in a body and is an intrinsic property of the body.	The strongly gravity pulls on the matter.