1.

If the linear momentum of a sphere is doubled, its kinetic energy will becomea) twiceb) four timesc) eight timesd) sixteen times

Answer»

p = (2*kinetic energy*m)^0.5=> (p2/p1)^2 = k2/k1=> (2/1)^2 = k2/k1=> k2/k1 = 4/1Here, k represents Kinetic energy and p represents momentum.Hence, with doubling of momentum, the kinetic energy becomes four times.

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