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Intensity of Gravitational Field :: Discussion
| 7. | A missile is launched with a velocity less than escape velocity. The sum of its kinetic energy and potential energy is? | |
| A. | Zero | |
| B. | Positive | |
| C. | Negative | |
| D. | First positive and then negative | |
| Answer: Option C | |
| Explanation: | |
|
For velocity less than the escape velocity, the missile is bound due to the gravitational field of the earth. Hence its total energy is negative. |
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