1. 1. Write the definition and unit for work.

2. 2. Write the definition and unit for power.

3. 3. Write the definition and unit for energy.

4. 4. We are going to do legs first. Write the name of our volunteers.

5. 5. We have measured the stairs that we will be using
5. We have measured the stairs that we will be using. Write the distance of the stairs WITH proper units.

6. 6. A typical teen has a mass of 60 kg
6. A typical teen has a mass of 60 kg. How can we find the weight on Earth? Write the formula for weight and proper units.

7. 7. Calculate the weight on Earth.

8. 8. Let’s calculate the work that will be done now
8. Let’s calculate the work that will be done now. Write the formula with proper units.

9. 9. Calculate the work of running on the stairs.

10. 10. Let’s time our volunteer now with a stopwatch
10. Let’s time our volunteer now with a stopwatch! Record the time with proper units.

11. 11. Write the formula for Power with proper units.

12. 12. Calculate the POWER of our volunteer.

13. 13. Two more volunteers! Write the names of the volunteers.

14. 14. The volunteers will measure the distance of the string to be travelled. Record it in METERS.

15. 15. The mass of the object is 0. 5 kg
15. The mass of the object is 0.5 kg. Calculate the weight of it on Earth with proper units.

16. 16. Calculate the work that will be done with proper units.

17. 17. Now, the volunteers will wind up the string and measure the time it takes. Record the time.

18. 18. Calculate the power.

19. 19. To find the horsepower, we divide the power by 746
19. To find the horsepower, we divide the power by 746. How much horsepower does our volunteer have?

20. 20. A high-performing horse has about 15 horsepower and a 2015 Mercedes-Benz ML63 SUV has 518 horsepower. So… was our volunteer very powerful?

21. 21. Why do we use machines like cars to improve our lives
21. Why do we use machines like cars to improve our lives? Use at least two sentences to explain your answer.