Roboguru

Perhatikan gambar berikut. Pernyataan yang benar adalah

Perhatikan gambar berikut.



Pernyataan yang benar adalah begin mathsize 14px style.... end style

  1. begin mathsize 14px style straight u with rightwards arrow on top plus straight v with rightwards arrow on top plus straight w with rightwards arrow on top equals 0 with rightwards arrow on top end style

  2. begin mathsize 14px style straight u with rightwards arrow on top plus straight v with rightwards arrow on top minus straight w with rightwards arrow on top equals 0 with rightwards arrow on top end style

  3. begin mathsize 14px style straight u with rightwards arrow on top plus straight v with rightwards arrow on top plus straight w with rightwards arrow on top equals 2 straight u with rightwards arrow on top end style

  4. begin mathsize 14px style straight u with rightwards arrow on top plus straight v with rightwards arrow on top plus straight w with rightwards arrow on top equals 2 straight v with rightwards arrow on top end style

  5. begin mathsize 14px style straight u with rightwards arrow on top plus straight v with rightwards arrow on top plus straight w with rightwards arrow on top equals 2 straight w with rightwards arrow on top end style

Jawaban:

Secara geometris dua vektor dapat dijumlahkan dengan cara sebagai berikut.



Sehingga, pada soal dapat dinyatakan sebagai berikut.

begin mathsize 14px style straight v with rightwards arrow on top plus straight w with rightwards arrow on top equals straight u with rightwards arrow on top end style

Karena pada opsi tidak ada bentuk penjumlahan vektor seperti itu, maka kita ubah bentuknya tetapi dengan syarat nilainya tetap sama.

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell straight v with rightwards arrow on top plus straight w with rightwards arrow on top end cell equals cell 2 straight u with rightwards arrow on top minus straight u with rightwards arrow on top end cell row cell straight u with rightwards arrow on top plus straight v with rightwards arrow on top plus straight w with rightwards arrow on top end cell equals cell 2 straight u with rightwards arrow on top end cell end table end style

Jadi, jawaban yang tepat adalah C.

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