Enable / disable collision detection for the selected objects, and control the typical collision detection specific properties.

When the tool is enabled, it shows the current collision detection mode along with the options that typically need to be defined with the effect.

To create a simulation where two spheres collide with each other:

1. Select a sphere and enable the 'Velocity' simulation tool. Enter two points in the View window to define velocity vector for the sphere.

2. Create another sphere and multi select the two spheres. Note that the spheres must be in the same hierarchy level.

3. Enable the Collision tool, set Mode option to 'Both' and accept the tool.

[Note] Note
You can activate the Collision tool again to edit any collision detection specific properties later. The options can also be set in the Property Window / Phys and Sim tabs.