Question about forces

[PinaColada]

Let’s say there’s a cube sliding across a frictionless platform. It then hits a wall. At the exact instance it hits the wall, what’s the net force and what are all the forces acting on the cube?

[peter-apps]

Hi PinaColada!
At the exact moment the block contacts the wall there will be 3 forces acting on the block:

• Weight (acting down)
• Normal Force from the platform (acting up) & equal to the weight (I’m assuming it’s a horizontal platform)
• Normal Force from the wall (acting in the opposite direction the block was moving) <-- This is the net force because it’s unbalanced.

[PinaColada]

Thanks Peter! I just wanted to have that cleared up haha