Question

The masses of two bodies A and B are in the ratio of 2:3. They are movin with velocities of 45 m/s and 15 m/s respectively. What is the ratio of their<br />
kinetic energies?​

Answer 1

Answer:

let mass of A=2x

mass of B = 3x

V1=45ms-1

V2=15 ms-1

K.E.=1/2mv2

K.E.1= 1/2*2x(45)^2.

K.E.2=1/2*3x(15)^2

hence find their ratio KE1:KE2