Physics 9702 · AS & A Level · Scalars and vectors

Scalars and vectors — practice question

A force of $10\,\text{N}$ together with a force of $5\,\text{N}$ act on an object. The angle between these two forces is $150^\circ$. The resultant force on the object may be broken down into two perpendicular components. Which row gives numerical expressions for one possible pair of perpendicular components?

  • A$10\cos30^\circ - 5$ and $10\cos30^\circ$
  • B$10\sin30^\circ - 5$ and $10\cos30^\circ$
  • C$10 - 5\cos30^\circ$ and $5\sin30^\circ$
  • D$10 - 5\sin30^\circ$ and $5\cos30^\circ$

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