Executive Solution Overview
please see attachment **files (1)** – ## Activity10WorkandPower.docx **## Activity10WorkandPower.docx** **Activity #10: Work and Power** **Objectives:** · Find out how much **work** you do when walking up stairs. · Find out how much **power** you use. **Materials:** · Phone (timer) · Ruler or measur…
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please see attachment
**files (1)**
– ## Activity10WorkandPower.docx
**## Activity10WorkandPower.docx**
**Activity #10: Work and Power**
**Objectives:**
· Find out how much
**work** you do when walking up stairs.
· Find out how much
**power** you use.
**Materials:**
· Phone (timer)
· Ruler or measuring tape
**Theory:** **Work** happens when you use force to move something.
When climbing stairs, the force is your weight, so:
· = your mass (kg)
· = 9.8 m/s²
· = height climbed (m)
· W= work (Joules, J)
**Power** tells how fast you do work.
· = power (Watts)
· = time (seconds)
**Procedure：**
1. Measure your mass (kg).
2. Measure the height of one step.
3. Count how many steps you climb. Try to climb 1–3 full flights of stairs (about 20–40 steps total).
4. Use a timer to record how long it takes you to go up the stairs. Try 2–3 times and use your fastest safe time.
**Calculate the following:**
1. Your total height climbed, using the equation:
2. Your work done, using the equation:
3. Power, using the equation:
**Answer the following questions:**
4. Who did more work: a heavier or lighter person? Why?
5. Who had more power: someone faster or slower? Why?
6.What could make your results a little inaccurate?
**## Activity10WorkandPower.docx**
**Activity #10: Work and Power**
**Objectives:**
· Find out how much
**work** you do when walking up stairs.
· Find out how much
**power** you use.
**Materials:**
· Phone (timer)
· Ruler or measuring tape
**Theory:** **Work** happens when you use force to move something.
When climbing stairs, the force is your weight, so:
· = your mass (kg)
· = 9.8 m/s²
· = height climbed (m)
· W= work (Joules, J)
**Power** tells how fast you do work.
· = power (Watts)
· = time (seconds)
**Procedure：**
1. Measure your mass (kg).
2. Measure the height of one step.
3. Count how many steps you climb. Try to climb 1–3 full flights of stairs (about 20–40 steps total).
4. Use a timer to record how long it takes you to go up the stairs. Try 2–3 times and use your fastest safe time.
**Calculate the following:**
1. Your total height climbed, using the equation:
2. Your work done, using the equation:
3. Power, using the equation:
**Answer the following questions:**
4. Who did more work: a heavier or lighter person? Why?
5. Who had more power: someone faster or slower? Why?
6.What could make your results a little inaccurate?
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