Question

if a car is moving at same speed as our car is moving we will be in notion of not

Answer 1

If I am sitting in the car next to yours, for me your car will look like it's at rest since both are moving with same speed. Since, Rest and Motion are relative terms and depend on point of view.

Answer 2

Hello
If u will see the other car it will be in rest for u because both r moving with same speed the point of view is required for motion .