Physics Material 2D reference

Explore the properties that control the friction and bounce between colliding 2D physics objects.

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Last updated 12 days ago

Use a Physics Material 2D to adjust the friction and bounce that occur between 2D physics objects when they collide.

For more information on game physics, refer to 3D Physics.

Use a Physics Material 2D

To create a Physics Material 2D, go to Assets > Create > 2D > Physics Material 2D.

To use your Physics Material 2D, assign it to the Material property of a Collider 2D or Rigidbody 2D component.

Note

The equivalent asset in 3D physics is referred to as a

Physics Material

A Physics Material 2D contains the following properties.

Property	Description
Friction	Sets the coefficient of friction for this collider.
Bounciness	Sets the degree to which collisions rebound from the surface. A value of 0 indicates no bounce while a value of 1 indicates a perfect bounce with no loss of energy.
Friction Combine	Defines how to combine both material friction values when two colliders interact. The options are: Average: Uses the average of the two values. Mean (Default): Uses the mean of the two values. Multiply: Multiplies the two values together. Minimum: Uses the smaller value. Maximum: Uses the larger value.
Bounce Combine	Defines how to combine both material bounciness values when two colliders interact. The options are: Average: Uses the average of the two values. Mean: Uses the mean of the two values. Multiply: Multiplies the two values together. Minimum: Uses the smaller value. Maximum (Default): Uses the larger value.