masses of two bodies are 1kg and 2kg respectively. if their kinetic energies are in 2:1 proportion, ratio of their speeds is........
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Let the mass of two bodies be m and M
and speed be v and V respectively.
So, kinetic energy of those bodies be k and K
Then, a/c to que
k:K = 2:1
=> 1/2 mv^2 : 1/2 MV^2 = 2:1
=> 1/2 (1kg)v^2: 1/2 (2kg) V^2 = 2:1
=> v^2: 2V^2 = 2:1
=> v^2 :V^2 = 4:1
=> v:V = 2:1
and speed be v and V respectively.
So, kinetic energy of those bodies be k and K
Then, a/c to que
k:K = 2:1
=> 1/2 mv^2 : 1/2 MV^2 = 2:1
=> 1/2 (1kg)v^2: 1/2 (2kg) V^2 = 2:1
=> v^2: 2V^2 = 2:1
=> v^2 :V^2 = 4:1
=> v:V = 2:1
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