When two forces act in the same direction, they are called concurrent forces.

Here's why:

* Concurrent: This means the forces act at the same point. Since they are acting in the same direction, they are naturally concurrent.

* Resultant Force: The combined effect of these forces is a single force, known as the resultant force, which is equal to the sum of the individual forces.

Example:

Imagine pushing a box with a force of 10 Newtons to the right, and another person pushing the box with a force of 5 Newtons to the right. The resultant force would be 15 Newtons to the right, as both forces are acting in the same direction.