362441 An express train is moving with a velocity $v_1$. Its driver finds another train that is moving on the same track in the same direction with velocity $v_2$. To escape collision, diver applies a retardation $a$ on the train, the minimum time of escaping collision will be

362443 Two cars, $A$ and $B$, start from $x=0$ and $x=-4$, respectively, along a straight line, and their position is given by $x_A=t^2-3t$ $x_B=t-4$ At what time they cross each other?

362444 A train of $150m$ in length is going towards the north direction at a speed of $10{ms}^{-1}$. A parrot flies at a speed of $5{ms}^{-1}$ towards the south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to

362441 An express train is moving with a velocity $v_1$. Its driver finds another train that is moving on the same track in the same direction with velocity $v_2$. To escape collision, diver applies a retardation $a$ on the train, the minimum time of escaping collision will be

362442 Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time $t_1.$ On other days, if she remains stationary on the moving escalator, then the escalator takes her up in time $t_2.$ The time taken by her to walk up on the moving escalator will be

362443 Two cars, $A$ and $B$, start from $x=0$ and $x=-4$, respectively, along a straight line, and their position is given by $x_A=t^2-3t$ $x_B=t-4$ At what time they cross each other?

362444 A train of $150m$ in length is going towards the north direction at a speed of $10{ms}^{-1}$. A parrot flies at a speed of $5{ms}^{-1}$ towards the south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to

362441 An express train is moving with a velocity $v_1$. Its driver finds another train that is moving on the same track in the same direction with velocity $v_2$. To escape collision, diver applies a retardation $a$ on the train, the minimum time of escaping collision will be

362442 Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time $t_1.$ On other days, if she remains stationary on the moving escalator, then the escalator takes her up in time $t_2.$ The time taken by her to walk up on the moving escalator will be

362443 Two cars, $A$ and $B$, start from $x=0$ and $x=-4$, respectively, along a straight line, and their position is given by $x_A=t^2-3t$ $x_B=t-4$ At what time they cross each other?

362444 A train of $150m$ in length is going towards the north direction at a speed of $10{ms}^{-1}$. A parrot flies at a speed of $5{ms}^{-1}$ towards the south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to

362441 An express train is moving with a velocity $v_1$. Its driver finds another train that is moving on the same track in the same direction with velocity $v_2$. To escape collision, diver applies a retardation $a$ on the train, the minimum time of escaping collision will be

362442 Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time $t_1.$ On other days, if she remains stationary on the moving escalator, then the escalator takes her up in time $t_2.$ The time taken by her to walk up on the moving escalator will be

362443 Two cars, $A$ and $B$, start from $x=0$ and $x=-4$, respectively, along a straight line, and their position is given by $x_A=t^2-3t$ $x_B=t-4$ At what time they cross each other?

362444 A train of $150m$ in length is going towards the north direction at a speed of $10{ms}^{-1}$. A parrot flies at a speed of $5{ms}^{-1}$ towards the south direction parallel to the railway track. The time taken by the parrot to cross the train is equal to