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

Relevance
  • 2 months ago
    Favorite 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

    Please Rate me!! It keeps me going. Thank you

Still have questions? Get your answers by asking now.