Question

multiple choice question
what is an attractive force that exists between all objects that have mass?
○ friction
○ contact force
○ normal force
○ gravity
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Explanation:

• Friction is a force that opposes motion between surfaces in contact, not an attractive force between all massive objects.
• Contact force requires physical contact between objects, which does not apply to all objects with mass (e.g., celestial bodies).
• Normal force is a contact force perpendicular to a surface, not an attractive force between all massive objects.
• Gravity is the fundamental attractive force that acts between all objects that have mass, regardless of contact.

Answer:

D. gravity