Physics(Please check thanks)
posted by Hannah on .
Two vectors have magnitudes 4m and 3m. Which choice is not a possible magnitude for their resultant?
3m, 1m, 7m, 12m
I chose 12m. Is this correct?

Correct, this follows from the triangle inequality. For two vectors x, and y, you have:
x+y <= x + y 
Thank you!