Question

It's actually Science but I didn't find it.

Answer 1

Answer:

Forces acting on an object may be balanced or unbalanced. When the forces  acting on an object have equal strength and act in opposite directions, they  are balanced. These forces cancel out one another, and the motion of the  object does not change.  When the forces acting on an object are unbalanced, they do not cancel out  one another. An unbalanced force acting on an object results in the object’s  motion changing. The object may change its speed (speed up or slow down), or it may change its direction.  Friction is a force that resists the motion or the tendency toward motion  between two objects in contact with each other.  Gravity is a force that pulls objects toward one another. For example, Earth  pulls all objects toward it.

Explanation: