Question #be172

1 Answer
Jun 15, 2016

Answer:

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

Explanation:

Have a look:
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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.