Solved Direction: Action - Reaction Force Pairs. Draw an | Chegg.com - Free Printable

This worksheet is about Newton’s Third Law of Motion:
> *“For every action, there is an equal and opposite reaction.”*

That means whenever one object exerts a force on a second object, the second object exerts a force of equal magnitude but in the opposite direction on the first object.

Let’s solve each situation step by step:

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1. Action: Hand touches nose

Reaction: Nose pushes back on hand

✔ Explanation: When your hand touches your nose, you’re applying a force to the nose. Simultaneously, the nose applies an equal and opposite force back on your hand — that’s why you can *feel* your nose when you touch it.

➡️ *Draw an arrow pointing from the nose toward the hand (opposite to the “hand touches nose” arrow).*

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2. Action: ________

Reaction: Head bumps ball

Action: Ball bumps head

✔ Explanation: The reaction says “Head bumps ball,” so the action must be the ball bumping into the head. Forces always come in pairs — if the head hits the ball, then the ball also hits the head with equal force in the opposite direction.

➡️ *Draw an arrow pointing from the ball toward the head (opposite to the “head bumps ball” arrow).*

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3. Action: Athlete pushes bar upward

Reaction: Bar pushes athlete downward

✔ Explanation: When the athlete pushes the barbell upward, the barbell pushes down on the athlete with equal force. This is why athletes feel the weight pressing down on them — even as they push up.

➡️ *Draw an arrow pointing downward from the bar toward the athlete’s hands/shoulders.*

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4. Action: ________

Reaction: Flower pulls on hand

Action: Hand pulls on flower

✔ Explanation: If the flower is pulling on the hand (maybe because it’s attached to a stem or vine), then the hand must have pulled on the flower first. The flower reacts by pulling back — this is tension or adhesive force in reverse.

➡️ *Draw an arrow pointing from the hand toward the flower (opposite to the “flower pulls on hand” arrow).*

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5. Action: ________

Reaction: Ball hits bat

Action: Bat hits ball

✔ Explanation: In baseball or softball, when the bat strikes the ball, the bat applies a force to the ball — and simultaneously, the ball applies an equal and opposite force back on the bat. That’s why you feel a “sting” in your hands when you hit the ball.

➡️ *Draw an arrow pointing from the bat toward the ball (opposite to the “ball hits bat” arrow).*

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## ✔ Final Answers:

| Situation | Action | Reaction |
|-----------|--------|----------|
| 1 | Hand touches nose | Nose pushes back on hand |
| 2 | Ball bumps head | Head bumps ball |
| 3 | Athlete pushes bar upward | Bar pushes athlete downward |
| 4 | Hand pulls on flower | Flower pulls on hand |
| 5 | Bat hits ball | Ball hits bat |

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💡 Tip for drawing arrows:
Always draw the reaction arrow in the opposite direction to the given action arrow — same length (equal force), opposite direction (opposite force).

You’ve now correctly identified all action-reaction pairs using Newton’s Third Law! 🎯