PRACTICE / Vector addition

A sideways component cancels

Two forces are (3i + 4j) N and (−3i + 2j) N.

Find the magnitude of their net force.

1. A$6\ \mathrm N$
2. B$2\ \mathrm N$
3. C$\sqrt{72}\ \mathrm N$
4. D$0\ \mathrm N$

Try it on paper first. Free sample problems in every collection include the complete reasoning: find one in this collection →