(a)
The recoil speed of the Earth.
(a)
Answer to Problem 73GP
The recoil speed of the Earth is
Explanation of Solution
Given:
The mass of the meteor is
The mass of the Earth is
The speed of meteor is
Formula used:
The expression for the conservation of momentum for a completely inelastic collision is,
Here,
Calculation:
The recoil speed of the Earth is,
Conclusion:
Thus, the recoil speed of the Earth is
(b)
The fraction of the meteors kinetic energy was transformed to kinetic energy of the Earth.
(b)
Answer to Problem 73GP
The fraction of the meteors kinetic energy was transformed to kinetic energy of the Earth is
Explanation of Solution
Given:
The mass of the meteor is
The mass of the Earth is
The speed of meteor is
Formula used:
The expression for the kinetic energy is,
Here, m is the mass and v is the velocity.
Calculation:
From part (a), the recoil speed of the Earth is
The kinetic energy of the meteor is,
The kinetic energy of the Earth is,
The fraction of the meteors kinetic energy was transformed to kinetic energy of the Earth is,
Conclusion:
Thus, the fraction of the meteors kinetic energy was transformed to kinetic energy of the Earth is
(c)
The change in Earth’s kinetic energy as a result of this collision.
(c)
Answer to Problem 73GP
The change in Earth’s kinetic energy as a result of this collision is
Explanation of Solution
Given:
The mass of the meteor is
The mass of the Earth is
The speed of meteor is
Formula used:
The expression for the change in kinetic energy is,
Here, m is the mass and v is the velocity.
Calculation:
From part (a), the recoil speed of the Earth is
The kinetic energy of the Earth is,
Conclusion:
Thus, the change in Earth’s kinetic energy as a result of this collision is
Chapter 7 Solutions
Physics: Principles with Applications
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Sears And Zemansky's University Physics With Modern Physics
College Physics
Physics: Principles with Applications
Tutorials in Introductory Physics
University Physics Volume 1
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