-The book has an acceleration of 0 m/s². Which pair of forces, excluding "action-reaction" pairs, must be equal in magnitude and opposite in direction?

Question

-The book has an acceleration of 0 m/s<sup>2</sup>. Which pair of forces, excluding action-reaction pairs, must be equal in magnitude and opposite in direction? A) 1 and 2 B) 1 and 3 C) 1 and 4 D) 2 and 3 E) 2 and 4

Quizplus · Accepted Answer

The book has an acceleration of 0 m/s², so the net force on the book is zero. This means that the sum of the forces in the x-direction must be equal to zero, and the sum of the forces in the y-direction must be equal to zero.Force 1 is in the x-direction and is positive, so force 2 must be in the x-direction and negative in order to cancel out force 1.

-The Book Has an Acceleration of 0 M/s2

-The Book Has an Acceleration of 0 M/s²