Page 102 - E-MODUL DWI PUTRI RAMADHANI REVISI_Neat

VEKTOR

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E. Latihan

1. Dua buah vektor, A dan B, masing-masing besarnya 30 N dan 40 N. Tentukanlah

resultan kedua vektor tersebut jika,

a. Searah
b. Berlawanan arah

c. Saling tegak lurus

d. Tentukan pula resultan jika kedua vektor tersebut membentuk sudut sudut 60°.
2. Gambar 3.25 melukiskan sebuah perahu sedang menyeberangi sungai. Air sungai

mengalir ke kanan.
a. Jika arah gerak perahu diarahkan tegak lurus arah

arus sungai. Dapatkah gerak perahu melalui
lintasan AB? Beri penjelasan! Jika tidak dapat

melalui lintasan AB, maka ke arah mana perahu

menyeberangi sungai?

Gambar 3.25 Sketsa Soal b. Agar perahu dapat menyeberangi sungai melalui
lintasan AB, ke arah mana perahu harus

digerakkan?

E-Modul Fisika Berbasis Model Discovery Learning Terintegrasi Pembelajaran Abad 21 98