Question
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 –Solution
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 canceled by the rifle's backward momentum, so the total momentum is still zero. The kinetic energies of the gun and bullet are both positive scalars, however, and do not cancel.
National Initiative on Climate Resilient Agriculture (NICRA) started in which year?
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A day is considered as rainy day when ………………………rains during 24 hours.
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The instrument used in meteorogical observatory used to measure the rainfall
The Total amount of annual precipitation in the country in mm is
Which of the following sheep breeds is most suitable to produce finest carpet wool in
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