The red ball started from the left.

The green ball started from the left.

The blue ball started from the left, went a little over halfway, and went back to the right.

The black ball started from the right.

The yellow ball started from the right.

The current answers I have selected are incorrect.

Follow the motion of the balis and consider the direction of the forces acting on the balls. Do not worry about any force right at o seconds or right at the end of the animabion, but consider the forces for the full time in between. If there is a net force pushing towards the right, select Right. If there is no net force pushing on the bail, select None. If during the time there is fint a net force towards the left and then a net force towards the night (or vice versa), then seiect poight and Leff: Click on the Initiatize button to set up the simulation and click on the Start button to start the animation. Red Batil Black ball Yellow Bail