Murphy Wells
11/26/2023 · Elementary School
Laurel is calculating the power she generated while running the 800 m race. She exerted a force of 200 N to complete the race in 150 seconds. (A) How much work did she do? (B) How much power didsshe exert? Be sure to give units, include the equations used, and show your work. You may begin your responses with: - The work she did is . . . because . . . .
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Quick Answer
- **Work done:** 160,000 joules (J) because work equals force multiplied by distance.
\[
W = 200\ \text{N} \times 800\ \text{m} = 160{,}000\ \text{J}
\]
- **Power exerted:** Approximately 1,067 watts (W) because power is work divided by time.
\[
P = \frac{160{,}000\ \text{J}}{150\ \text{s}} \approx 1{,}067\ \text{W}
\]
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