A physics teacher performed a demonstration for a science class by pulling a crate across the floor
1 answer:
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Answer:
-75.35°
Explanation:
Let C be the sum of the two vectors A and B. Hence, we can write the following
but since the vector C is in the -y direction, = 0 and
= —12 m.
Thus
similarly, we can determine by rearranging equation (1)
so the magnitude of B is
Finally, the direction of B can be calculated as follows
Ф=
hence the vector B makes an angle of 75.35 clockwise with + x axis