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, irrelevant here.
• Gravitational force is between masses (e.g., Earth and boat), but it doesn’t prevent floating away directly.
• Contact force: The rope exerts a contact force (tension) on the boat, countering the force (like water current) that would move it, keeping it from floating away.
• Weak force is involved in subatomic particle interactions, not here.

Answer:

contact force