Question

A positively charged black puck is at the left side of the page waiting to be
forced into the goal.
1. At the top of the page, there are red balls with a positive sign on each.
Those are positively charged.

Answer 1

I’m missing what you want me to do with that description. Do you want a qualitative explanation, a calculation of forces/trajectory, or a suggestion for how to get the puck into the goal?

Quick qualitative summary you can use:
- Like charges repel. Since the puck is positively charged and the red balls are positive, each red ball will repel the puck.
- The electric force from a single red ball on the puck is Coulomb’s law:
F = k q1 q2 / r^2 (directed along the line joining them, away from the red ball),
where k ≈ 8.99×10^9 N·m^2/C^2.
- Electric forces add by vector superposition: sum the forces from all red balls to get the net electric force on the puck at any instant.
- The puck’s acceleration is a = Fnet / m. Its trajectory follows from integrating that acceleration (plus any friction or collisions).

Qualitative consequences for your scene:
- If the red balls are above the puck, they will push it downward and somewhat away from them; whether that helps or hinders getting into the goal depends on the goal’s location.
- If the goal is to the right and the red balls are above/left, they may deflect the puck and make its path curve; if you want a stronger push to the right, placing a positive source behind the puck (to its left) can push it forward, or placing negative charges near the goal can attract it.

If you want a calculation or a predicted path, tell me:
- coordinates and charges of the puck and each red ball,
- puck mass and any friction,
- initial position and velocity,
and whether collisions with walls are elastic. I’ll compute forces and either the instantaneous acceleration or a simulated trajectory.