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Q. |
A bullet is fired from a rifle which recoils after firing. The ratio of kinetic energy of the rifle to that of the bullet is – |
A. | zero |
B. | one |
C. | less than one |
D. | more than one |
Answer» A. zero | |
Explanation: The rifle and bullet have zero momentum and zero kinetic energy to start with. When the trigger is pulled, the bullet gains some momentum in the forward direction, but this is |
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