GAT Subject
Engineering
Computer Science Civil Engineering Chemical Engineering Agricultural Engineering Mechanical Engineering Electronics and Communication
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. |
|
Tutorial Link: |