Concept explainers
(a)
The time taken by the first car to move after the second car begin to pass the first car.
(a)
Answer to Problem 38P
The time taken by the first car to move after the second car passes through it is
Explanation of Solution
Given:
The time difference between the two cars is
Formula Used:
The time taken by the first car is
The expression for the distance travelled by the second car is given by,
The expression for the relation between the distance travelled by both the cars is calculated as,
Calculation:
The first car starts from the rest, thus the initial velocity of the first car is
The distance travelled by the first car is calculated as,
The second car starts from the rest, thus the initial velocity of the second car is
The distance travelled by the second car is calculated as,
The time after which the first car begins to move after the second car passes is given by,
Conclusion:
Therefore, the time taken by the first car to move after the second car passes through it is
(b)
The ratio for the speed of both the car at the time
(b)
Answer to Problem 38P
The ratio of the final speed of both the car is
Explanation of Solution
Formula Used:
The expression for the final velocity of the first car is given by,
The expression for the final velocity of the second car is given by,
Calculation:
The final velocity of the first car is calculated as,
The final velocity of the second car is calculated as,
The ratio of the velocity is calculated as,
Conclusion:
Therefore, the ratio of the final speed of both the car is
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Chapter 2 Solutions
Physics Fundamentals
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