Question

Forces can be categorised as:

• A. gravity
• B. non-gravity
• C. non-contact
• D. contact

Answer 1

Answer: (C), (D)

The correct options are
C non-contact
D contact

All forces can broadly be classified into contact and non-contact forces. A contact force can only be applied on an object when there is contact between the object which is applying force and the object on which the force is applied. For example, Normal force is a contact force. A non-contact force is a force applied to an object by another body that is not in direct contact with it. For example gravitational force is a non-contact force.