Question #be172

1 Answer
Gió
Jun 15, 2016

I found:
69) option c;
70) option b.

Explanation:

Have a look:
enter image source here
Number 70):
you have two vectors vecP and vecR that give a total magnitude of the resultant of 50 units; combined with vecQ in the opposite direction you should get 50-40=10 units to the west.

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