Question

1. when forces on an object are equal in size and opposite in direction, they are called ____. 9. when forces are not equal, the object will be __. 10. a force diagram uses ____ to show the direction and strength of forces.

Explanation:

Question 8

In physics (a subfield of Natural Science), when two forces acting on an object are equal in magnitude (size) and opposite in direction, they are defined as balanced forces. These forces do not cause a change in the object's motion (it remains at rest or moves with constant velocity).

From the principles of forces in physics, when the net force (the vector sum of all forces) on an object is not zero (because forces are not equal), the object will accelerate. Acceleration means a change in velocity, which can be a change in speed, direction, or both.

In physics, a force diagram (also called a free - body diagram) uses arrows to represent forces. The length of the arrow is related to the strength (magnitude) of the force, and the direction of the arrow shows the direction in which the force is acting.

Answer:

balanced forces

Question 9