Question

a rope is attached to a boat on a pier. what force keeps the boat from floating away? strong nuclear force gravitational force contact force weak force

Explanation:

• Strong nuclear force acts within atomic nuclei, not on boats.
• Gravitational force is between masses (e.g., Earth and boat), but it doesn’t stop floating away directly here.
• Weak force is involved in particle interactions, irrelevant to the boat.
• Contact force (tension in the rope) is a force exerted when objects are in contact, and the rope’s tension (a contact force) holds the boat, preventing it from floating away.

Answer:

contact force