Question

Two balls of mass ratio 1:2are dropped from the same height. Find the ratio of their velocities also the forces acting on the body

Answer 1

If a body is dropped from a height h, the velocity of the body at the bottom will be √(2gh)
You can see that the velocity is independent​ of mass of the body.
Hence, the ratio of the velocities will be 1:1

The ratio of mass of the balls is 1:2. Then, let the mass of ball1 be m and that of ball2 be 2m.

The force acting on the balls is due to the gravitational force only which is mg for ball 1 and 2mg for ball 2.

The ratio of forces = mg:2mg = 1:2

Hope you understand the concept. All the best!