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April 18, 2014

Homework Help: physics

Posted by Eunice on Sunday, February 7, 2010 at 7:15pm.

Two vectors have magnitudes 3.0 and 4.0. How are the directions of the two vectors related given the following conditions?

1) The sum has magnitude 7.0.
(a)They both point in the same direction.
(b)They each point in opposite directions.
(c) They are perpendicular to each other.


2) If the sum has magnitude 5.0.
(a)They both point in the same direction.
(b)They each point in opposite direction.
(c) They are perpendicular to each other.


3) What relationship between the directions gives the smallest magnitude sum?
(a)They both point in the same direction.
(b)They each point in opposite direction.
(c) They are perpendicular to each other.


What is this magnitude?

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