Worksheet for students to identify potential and kinetic energy in everyday situations.

Let's solve this worksheet step by step. The goal is to identify whether each object has potential energy, kinetic energy, or both, based on its state.

Key Concepts:

- Potential Energy (PE): Stored energy due to position, shape, or state.
- Gravitational PE: Due to height above the ground.
- Elastic PE: Stored in stretched or compressed objects (like rubber bands).
- Kinetic Energy (KE): Energy of motion.

Now let’s go through each item:

---

1. An apple falling from a tree
→ It is moving downward, so it has kinetic energy.
→ It also has some gravitational potential energy because it's still above the ground.
✔ Both kinetic and potential energy

2. A stationary ball on the ground
→ Not moving → no kinetic energy
→ On the ground → no height → no gravitational potential energy
✔ No energy (or negligible) – but technically, if we consider only mechanical energy, it has neither kinetic nor potential energy
→ Answer: Neither (or zero mechanical energy)

3. A sleeping dog
→ Not moving → no kinetic energy
→ At rest on the ground → no significant height → no potential energy
✔ Neither kinetic nor potential energy (in mechanical terms)

4. A boy running across the street
→ He is moving → has kinetic energy
✔ Kinetic energy

5. A car traveling on the road
→ Moving → has kinetic energy
✔ Kinetic energy

6. A stretched rubber band
→ Stretched → stored elastic energy → elastic potential energy
✔ Potential energy (elastic)

7. A basketball being thrown
→ In motion → has kinetic energy
→ Also at some height → has gravitational potential energy
✔ Both kinetic and potential energy

8. A girl biking at the park
→ Moving → kinetic energy
✔ Kinetic energy

9. A leaf lying on the ground
→ Not moving → no kinetic energy
→ On ground → no height → no potential energy
✔ Neither kinetic nor potential energy

10. A planet revolving around a star
→ Moving in orbit → has kinetic energy
→ Also under gravitational influence → has gravitational potential energy
✔ Both kinetic and potential energy

---

Final Answers:

1. An apple falling from a tree → Both kinetic and potential energy
2. A stationary ball on the ground → Neither
3. A sleeping dog → Neither
4. A boy running across the street → Kinetic energy
5. A car traveling on the road → Kinetic energy
6. A stretched rubber band → Potential energy
7. A basketball being thrown → Both kinetic and potential energy
8. A girl biking at the park → Kinetic energy
9. A leaf lying on the ground → Neither
10. A planet revolving around a star → Both kinetic and potential energy

---

✔ Note: For simplicity in many educational contexts, "potential energy" might refer specifically to gravitational or elastic forms, and "kinetic" to motion. So the answers are based on mechanical energy types.

Let me know if you'd like a version with just one word per blank!