The time taken by the car to accelerate from 55 km/h to 95 km/h.
Answer to Problem 82GP
Solution:7.6 s
Explanation of Solution
Work-energy theorem states that the work done by a body is equal to the change in its kinetic energy.
Given:
The initial velocity of the car is
The final velocity of the car is
The mass of the car is
The time taken to reach the final speed is
Formula used:
Initial power:
If the time taken to increase the velocity to 95 km/h in the second case is
Calculations
The power of the car in the first case is:
The power of the car in the second case is:
Conclusion:
The approximate time taken is 7.6 s.
Chapter 6 Solutions
Physics: Principles with Applications
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