hitungan fisika
2
x= V x .t = Vcos .t = 21 . cos 30 o .1,2 = 21 . . 1,2 = 21,8m Untuk mencari t : h = V y . t + . g . t 2 20 = 21 . sin 30 o . t + . 10 . t 2 20 = 10,5 . t + 5 . t 2 4 = 2,1 . t + t 2 t 2 + 2,1t – 4 = 0 t 12 = = = = = t 1 =
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FISIKA
Transcript of hitungan fisika
x= Vx .t
= Vcos .t
= 21 . cos 30o.1,2
= 21 . . 1,2
= 21,8m
Untuk mencari t :
h = Vy . t + . g . t2
20 = 21 . sin 30o . t + . 10 . t2
20 = 10,5 . t + 5 . t2
4 = 2,1 . t + t2
t2 + 2,1t – 4 = 0
t12 =
=
=
=
=
t1 =
= 1,2 s
t2 =
= -3,35 s
