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.

The correct option is C) The angle between the vectors is 120°.

Why?

We can solve the problem and find the correct option using the Law of Cosine.

Let A and B, the given two sides and R the resultant (sum),

Then,

So, using the law of cosines, we have:

Hence, we have that the angle between the vectors is 120°. The correct option is C) The angle between the vectors is 120°

Have a nice day!

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000

the right answer is 0.3 meters per second