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Show vectors of ball velocities on canvas
Visualise lines pointing in the direction of the velocity of each ball on the table
Cue aim
Separate physics loop from graphical frames
Canvas render
Two ball collisions
Visualisation
Calculation
Let
Let’s define their respective velocity vectors:
Determine the threshold distance between the two balls to detect a contact:
where
At the point of contact, calculate the vector between the centre points of both balls:
This vector has the direction in which ball A will continue rolling after the impact.
To determine the ball velocities after the impact, we follow the conservation of momentum:
and conservation of energy:
This can only be true if the angle between
The magnitudes are calculated as follows:
Resources
Single ball movement
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