Question

ball of mass 3 kg and 9 kg are dropped together from 60 feet after fall of 45 feet their KE will be in ratio of​

Answer 1

1:3

Explanation:

Given that Mass m1=3, m2=9

As both balls are falling through the same height therefore they possess the same velocity

KE=0.5mv^2

kinetic engery is directly proportional to mass

or,

KE α m......(v is constant)

KE1/KE2= m1/m2 = 3/9 = 1/3

hence req. ration is 1:3