plzz answer with steps and formula used............​​

Dear student,

From the acceleration of the balloon, we can find that the speed of the balloon after 2 seconds would bein upwards direction.

When the particle is dropped from this height, its initial velocity will be equal to that of the balloon it was dropeed from, which is,

After this time, the body is in free fall, hence the acceleration of the body will be.

Hence the displacement and speed after 2 seconds can be found out using the equations of motion-