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# A car and driver weighing 5310 N passes a a sign stating “Bridge Out 23.1 m Ahead.?

A car and driver weighing 5310 N passes a sign stating “Bridge Out 23.1 m Ahead.” She slams on the brakes, and the car decelerates at a constant rate of 13 m/s2.

The acceleration of gravity is 9.8 m/s 2. What is the magnitude of the work done stopping the car if the car just stops in time to avoid diving into the water?

1. 1.38306 × 10 to the power of 5 J

2. 1.54578 × 10 to the power of 5 J

3. 1.30171 × 10 to the power of 5 J

4. 1.95256 × 10 to the power of 5 J

5. 1.87121 × 10 to the power of 5 J

6. 1.46442 × 10 to the power of 5 J

7. 1.62714 × 10 to the power of 5 J

8. 1.70849 × 10 to the power of 5 J

9. 2.03392 × 10 to the power of 5 J

10. 1.78985 × 10 to the power of5 J

### 1 Answer

- jacob sLv 73 months agoFavorite Answer
w=5310=mg

m=5310/9.8=541.84Kg

force =ma=541.84*13=7043.87 N

displacement = 23.1m

work done =force*displacement =7043.87*23.1= 167713.57 J

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