Respuesta :
The force that impacts the ball motion is external force i.e. 2N.
Given that,
- A force of 5N pushes a ball to the right.
- And a force of 7N pushes the ball to the left.
Based on the above information, the calculation is as follows:
= 7N - 5N
= 2N
This 2N represents the external force.
Learn more: brainly.com/question/23334479