MCQ
If a shell fired from a cannon, explodes in mid air, then
- ✓Its total kinetic energy increases
- BIts total momentum increases
- CIts total momentum decreases
- DNone of these
✓
Answer
Correct option: A.
Its total kinetic energy increases
a
(a) The chemical energy of the shell is converted to mechanical energy. The external potential energy gets converted to its kinetic energy due to explosion. So kinetic energy increases. But the total momentum remains constant.
(a) The chemical energy of the shell is converted to mechanical energy. The external potential energy gets converted to its kinetic energy due to explosion. So kinetic energy increases. But the total momentum remains constant.
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