reviewer for physics

waaah! di ko matiis na di magblog. kaya eto. at least may kinalaman pa rin sa lessons namin for QFE. so eto na ang ginawa kong madaliang reviewer. last minute to befor the exam ko ginawa

Physics - study of physical forces and qualities

Measurement - process of measuring, estimating & calculating a certain quantity

2 system of units - English & Metric System

7 base units of SI - kg, m, s, K, A, cd, mol

3 quantity of measurement - length, mass, & time

time - forward flow of events

mass -used to describe the amount of matter

acceleration - time rate of change of velocity

velocity - time rate change of position

motion - change in position

mechanics - study of motion

2 kinds of mechanics - kinematics & dynamics

kinematics - description of the motion of object without consideration of what causes the motion

dynamics - analyzes the causes of motion

2 quantities - scalar & vector quantity

scalar quantity - magnitude only

vector quantity - magnitude and direction

arrow - represents vector

3 parts of the arrow - arrowhead, length of the arrow, and tail

arrowhead - where it will go

length of arrow - distance

tail - where did it come from

*velocity is a vector quantity

*speed is a scalar quantity

freefall - objects in motion under the influence of gravity

energy - capacity to do work

2 energy - potential & kinetic energy

kinetic energy - energy in motion

potential energy - energy at rest

3 types of potential - elastic, chemical, and gravitational

power - rate of doing work

watts - unit for power

work - product of the magnitudes of the displacement & the component of the force parallel to the displacement

Joules(Nm) - unit for work

friction - resistance to motion whenever two objects are in contact

3 types of friction - static, rolling, and sliding

*di ko na sinama mga formulas. mjo alam ko na naman un. hehe. sana matapos na tong week na to.

guys. sa thursday nga pala nood kami sa d.l.umali ng "ROMEO ROCKS JULIET". mukhang astig e. play un. ge. kwento ko na lang sa susunod mga mangyayari.