(a)
The change in momentum of the car due to the fly.
(a)
Answer to Problem 91P
The change in momentum of the car due to the fly is
Explanation of Solution
Write the expression for conservation of momentum.
Here,
Write the expression for car’s final momentum.
Here,
Write the expression for car’s initial momentum.
Here,
Write the expression for change in momentum of the car due to the fly.
Here,
Conclusion:
Substitute
Substitute
Substitute
Substitute
Therefore, the change in momentum of the car due to the fly is
(b)
The change in momentum of the fly due to the car.
(b)
Answer to Problem 91P
The change in momentum of the fly due to the car is
Explanation of Solution
Write the expression for change in momentum of the fly due to the car.
Here,
Conclusion:
Substitute
Therefore, the change in momentum of the fly due to the car is
(c)
The number of flies takes to reduce the car’s speed into
(c)
Answer to Problem 91P
The number of flies takes to reduce the car’s speed into
Explanation of Solution
Write the expression for the number of flies takes to reduce the car’s speed.
Here,
Conclusion:
Substitute
Therefore, the number of flies takes to reduce the car’s speed into
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