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SIMULATION: TRAJECTORY I

Place the observer in the position X-ref =-2 , Y-ref=0 , and click on in the visual.

Observe the result

Change to another position. X-ref=-1, Y-ref=2, for example.

What happens then?

¡ Do not press init!. Change Vx-ref to 0 and/or Vy-ref to 0.5, What happens now?