Question

Although a stone and the earth attract each other with equal force why do we observe that only the stonefall towards the earth but the earth does not raise towards the stone? explain

Answer 1

It is true that the stone and earth attract each other with the same force.

But we see only the stone moving, not get earth.

because acceleration = Force/mass

mass of earth is around 6×10^24 kg

for a 1kg stonewhen force is around 10N

so acceleration of earth = 10/(6×10^24) = 1.6 × 10^(-24) m/s^2.
Acceleration of earth is of the order 10^(-24) . You can take it as 0.
So earth doesn't move.

That's why you don't see the earth moving towards the stone.