Overview
The Rigidbody component gives a GameObject a physical presence in the scene in that it is able to respond to forces. You could apply forces directly to the GameObject or allow it to react to external forces such as gravity or another Rigidbody hitting it.
Adding a Rigidbody component
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The useGravity property of a RigidBody controls whether gravity affects it or not. If set to false the RigidBody will behave as if in outer space (without a constant force being applied to it in some direction).
GetComponent<RigidBody>().useGravity = false;
It is very useful in the situati...
