Given that a force F acts on a body for time `t_(1)` and displaces the body by `vec d` . In which of the following cases the velocity of the body must increases ?

Given that a force hatF acts on a body for time t,and displaces the body by hatd .In which of the following cases,the speed of the body must not increase?

In which of the following cases the net force acting on the body is not zero?

In Which of the following cases the net force acting on the body is not zero ?

In Which of the following cases the net force acting on the body is not zero ?

A body is acted upon by a constant force fromtime t=0 to a time t=T after which it does not experience any force. Which of the following graphs best represents the variation of the velocity of the body with time ?