I am the unseen force that can stop you in your tracks, yet I can also help you hold on tight. What am I?
Category: Science · Difficulty: hard
Hint: I am vital for walking without slipping.
Answer
Friction
Explanation
Friction is the force that opposes motion between two surfaces and is essential for many everyday actions.
This is a hard science riddle — a tricky one that takes a little thought. The answer is Friction.
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