Work, Energy and Power

Related Questions

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• If a shell fired from a cannon, explodes in mid air, then

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• A bomb is kept stationary at a point. It suddenly explodes into two fragments of masses 1 g and $3\;g$. The total K.E. of the fragments is $6.4 \times {10^4}J$. What is the K.E. of the smaller fragment

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• A body of mass m is moving in a circle of radius r with a constant speed v. The force on the body is $\frac{{m{v^2}}}{r}$ and is directed towards the centre. What is the work done by this force in moving the body over half the circumference of the circle

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