Let's consider collisions in two dimension:
Press Start to begin the animation.
Two circular objects will move with pre-defined velocity(yellow arrow).
Click left mouse button to suspend the animation. Now, you can
Click near the tip of the velocity vector and drag the mouse button left/right to change its value (the initial velocity of that object).
Click near the circular boundary and drag the mouse button to change its radius.
Click near the center of the circle to change its mass.
Click the left mouse button to decrease mass by one unit.
Click the right mouse button to increase mass by one unit.
Click the mouse button again to resume the animation.
When the two objects collide, the animation will be suspend.
Press the mouse button ( Do not release it) to see the velocity vectors just after the collision.
Press Reset button to reset parameters to default values.
eta is the coefficient of restitution
eta = | relative velocity just after collision / relative velocity just before collision |
for elastic collision eta=1., for perfectly inelastic collision eta=0.
You can select different frame of reference to view the relative motion of all the objects.
lab is a laboratory inertial frame. m1, m2 and CM are frame of reference with respect to
left circular object m1, right circular object m2 and center of mass for m1 and m2.
View collision in 1-dimension.
Your suggestions are highly appreciated! Please click firstname.lastname@example.org
Author¡GFu-Kwun Hwang, Dept. of physics, National Taiwan Normal University
Last modified : More
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