Also do not forget that physics objects have to have material, or they will bounce around wildly because they need the damping values etc. which are not set on objects without materials.

• 也不忘记那一个物理学物体必须有一个材料,或他们将会到处胡乱反弹，因为他们需要阻尼值设置等等没有材料的物体的不会产生反应。