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Section 13.5 Gravitational Potential EnergyA rocket is
Chapter 13, Problem 14E(choose chapter or problem)
Problem 14E
Section 13.5 Gravitational Potential Energy
A rocket is launched straight up from the earth’s surface at a speed of 15,000 m/s. What is its speed when it is very far away from the earth?
Questions & Answers
QUESTION:
Problem 14E
Section 13.5 Gravitational Potential Energy
A rocket is launched straight up from the earth’s surface at a speed of 15,000 m/s. What is its speed when it is very far away from the earth?
ANSWER:
Step 1 of 1
We have to find the speed of the rocket when it is very far away from the earth.
The speed of the rocket when it is very far away from the earth can be found using the law of conservation of energy.
\(K_{2}+U_{2}=K_{1}+U_{1}\)
2 represents the energy of the rocket at a faraway distance.
1represents the energy of the rocket at the surface of Earth.
\(\frac{1}{2} m_{r} v_{2}^{2}-\frac{G M_{e} m_{r}}{r_{2}}=\frac{1}{2} m_{r} v_{1}^{2}-\frac{G M_{e} m_{r}}{R_{e}}\)