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Physics, 23.10.2019 20:00 CMB420

If the resultant of two velocity vectors of equal magnitude is also of the same magnitude, then which statement must be correct?
a) the two velocity vectors are antiparallel.
eliminate
b) the angle between the vectors is 60°.
c) the angle between the vectors is 120°.
d) the two velocity vectors are parallel to each other.

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