Question

Find the ratio of kinetic energy of two bodies having masses 2kg and 3kg moving with velocity 2m/sec and 3m/sec.

Answer 1

Since K= 1/2mv square

So K of body A =1/2mv sq

———————

K of body B. =1/2 mv sq

K of body A =1/2*2*4

————-——

K of body B =1/2*3*9

K of body A =8

——————. —

K of body B 27