📚 Part 1: Understanding Energy and Forces

1. Which type of energy is stored in a stretched rubber band?

Kinetic energy

Elastic potential energy

Chemical energy

Thermal energy

2. What happens to the kinetic energy of a moving car when it brakes to a stop?

It disappears completely

It is converted to thermal energy

It becomes potential energy

It stays the same

3. A balanced force means:

The object is moving at constant speed

The object is accelerating

The net force is zero

The object has no forces acting on it

4. Fill in the blanks:

The Law of Conservation of Energy states that energy cannot be _____________ or _____________, only _____________ from one form to another.

5. Calculate the kinetic energy of a 2 kg ball moving at 5 m/s. (Use KE = ½mv²)

🔍 Part 2: Force Diagram

6. The diagram below shows a book resting on a table. Label the forces acting on the book using the words from the box.

Word bank: Weight, Normal force, Friction, Air resistance

7. Explain why the book is not moving even though forces are acting on it:

8. Choose ONE energy transformation that happens in your daily life and explain it:

9. Rate your understanding of today's lesson (circle one):

😕 Need more help 😐 Getting there 😊 I understand 🤩 I could teach someone else

10. One question I still have about energy and forces is: