Question

if the force is applied opposite to the motion what will happen to the speed of the object

Answer 1

First of all, You will have to clear this In which direction the force is applied on the moving body, In general ways if force is applied in direction of motionthen speed of moving body willincrease while if the force is applied inopposite of the motion then speed ofobject will decrease.

Answer 2

it will be redused and stopped.