Question

Ratio of kinetic energy of Sohan and Ravi weighing
80 kg and 60 kg respectively, running on a track, is
2:3. To have kinetic energy equal to Ravi, Sohan
increases his speed by 2 m/s. The initial speed of
Sohan was approximately
(1) 2.75 m/s
(2) 8.9 m/s
(3) 1.75 m/s
(4) 0.75 m/s​

Answer 1

Explanation:

Answer is about 0.75m/s (4)