 So what is the time of the ground also exerts on it some force right so from there is what? Sir if my velocity is minus sign. Suppose you find the same. Anyways so that if we commit to that. See this book has all this chapter it is based on in one day some question in one day something is wrong. Sir 11. 11. All velocities not actually. You can find certain amount which means that the difference it is a little bit off. Okay acceleration. And generally also you can say that distance 7.