Vector vector a has a magnitude of 28 units and points in the positive y-direction. When vector vector b is added to vector a ,
the resultant vector vector a + vector b points in the negative y-direction with a magnitude of 12 units. Find the magnitude of vector b ?
1 answer:
28 + vector b = -12
vector b = -40
vector b has magnitude 40 units in the negative y direction.
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