Lesson 1: What is Energy?

Lesson 1 Notes:      

• Template (WORD/PDF)            
• Filled (WORD/PDF)

Practice Assignment:     

1. Energy Practice Worksheet (WORD/PDF)

***Please attempt the assignment without looking at the attached answer key first. Check yourself afterwards to see how you did. 

Lesson 2: Kinetic Energy

Kinetic Energy Notes with Practice:      

• Template (WORD/PDF)         
• Filled (WORD/PDF)

Practice Assignments:

1. Kinetic Energy Practice Problems (PART OF NOTES)
2. Kinetic Energy More Practice (Next Day) (WORD/PDF)

Answers to Kinetic Energy Notes with Practice:

1. 1. 375 J
2. 145,000 J
3. 70 J
4. 4129 J
5. 26 m/s
6. 2.2x10^-16 J
   
7. 0.45 Kg
8. 6.4 Kg
9. 12 m/s
10. 1.14 m/s
11. 3.2 m/s

Lesson 3: Potential Energy

Potential Energy Notes with Practice:      Template (WORD/PDF)         Filled (WORD/PDF)

Answers to Potential Energy Notes with Practice: 

1. 21 J
2. 740 J
3. 3.4 m
4. 890 m
5. 40.8 m
6. 18 Kg
7. 22 Kg
8. 790 m

More Kinetic and Potential Energy Practice:

Assignments: 

1. Kinetic Energy Practice Questions (WORD/PDF)
2. Potential and Kinetic Energy Practice Questions (WORD/PDF) and KEY

Answers to Kinetic Energy Problems:

1. 22600 J
2. 0.02 J
3. 30300 J
4. 1270 Kg
5. 200 J
6. 1.90 x 10⁹ J
7. 0.00300Kg or 3.00 g
8. 20 m/s
9. The kinetic energy would double
10. The kinetic energy would quadruple (increase by a factor of 2²)

Lesson 4 - Conservation of Energy

Notes with Practice:        Template (WORD/PDF)                  Filled (WORD/PDF)

Answers to Conservation of Energy Notes with Practice: 

1. 0.521 m
2. 12.5 m/s
3. 69.8 m
4. 52.6 m/s
5. 8.9 m/s
6. 2.2 m/s
7. 10.8 m/s
8. 13 m/s
9. 14.2 m/s ***see note at bottom
10. 0.624 m

Number 9 was printed wrongly. It should read the following:

9. The roller coaster shown above has a mass of 525 Kg and is travelling at 2.10 m/s at point A, what is the speed at the lowest point?  Answer 10.8 m/s

Lesson 5 - Energy Efficiency

Energy Efficiency Notes with Practice:       

• Template (WORD/PDF)            
• Filled (WORD/PDF)

Answers to Energy Efficiency Notes with Practice:

1. 80%; 20%
2. 63 J
3. 38.26%; 61.74% = 1772 kJ
4. 34.5%
5. 84%
6. a) 4.46 m/s; b)7.69 m/s
7. 0.187 m 

Lesson 6 - Thermal Energy and Heat Capacity 

Thermal Energy Notes with Practice:       

• Template (WORD/PDF)            
• Filled (WORD/PDF)

Answers to Energy Efficiency Notes with Practice:

1. 1,172,992 J (or 1.17 MJ)
2. 5.23 kg
3. 6.72°C
4. 47.3°C
5. 9,324,000 J (or 9.32 MJ)
6. 69,300 J
7. 1.19°C
8. 1,667,790 J (or 1.67 MJ)
9. 134.02°C (temperature difference)
10. 2,654,400 J (or 2.65 MJ)