"catatan SI BOY" , kata bapak

some people say, "you must to learn according with your principles and your learning strategy for your success in the future" 

so, because I was also very boring, so this time I get around to learn and memorize physics formulas from my beloved physics teacher, Mr. Herdik :)

sooo , cekidooott ;)


there are some formulas that he teached for us ( all of the student of XI IA 3 )

this is his formulas . his brain like albert einstein

dynamics force's formula 

dimana a = 53^o

m = 10 kg , maka W = m . g = 10 . 10 = 100 N

m = 0,2

ditanyakan perceptan dan kecepatan benda bergerak selama 2 detik !

jadi rumusnya adalah :

N + F sin a   = W

N                     = 100 – (50. 4/5)

N                     = 100 – 40

N                     = 60 N

f = m . N

f = 0,2 . 60

f = 12 N

maka ,

F cos 53 – f      = m.a

50. 3/5 - 12      = m.a

30 – 12              = 10a

18                        = 10a

a                          = 1,8 ^m/_s²

V = a.t

V = 1,8 . 2

V = 30 m/s

gravitational force (gaya gravitasi)

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i hope it would be usefull for you all JJJ