Question

A ball of mass 1 kg and another of mass 2 kg are dropped from a tall building whose height is 80 m.

After, a fall of 40 m each towards earth, determine the ratio of their kinetic energy​

Answer 1

Answer:

ratio is 1:2

Explanation:

m1 (of first ball)=1kg

and m2 = 2kg

K.E(1)/K.E(2)=m1 gh/m2 gh

$= \frac{1 \times 9.8 \times 40}{2 \times 9.8 \times 40} \\ = \frac{1}{2}$