JEE Main Physics question

Physics Work, Energy and Power JEE Main

If velocity of a body is twice of the previous velocity, then kinetic energy will become

(A)2 times
(B)1/2 times
(C)4 timesCorrect
(D)1 times

Answer: (C)

Solution

KE = ½mv², so KE ∝ v². Doubling v quadruples the KE.

Question ID VK-153971