A bullet fired into a fixed target loses half of its velocity after penetrating $3\, cm$. How much further will it penetrate before coming to rest assuming that it faces constant resistance to motion.........$cm$
$1.5$
$1$
$3$
$2$
A goods train accelerating uniformly on a straight railway track, approaches an electric pole standing on the side of track. Its engine passes the pole with velocity $u$ and the guard's room passes with velocity $v.$ The middle wagon of the train passes the pole with a velocity.
For a body moving with uniform acceleration along straight line, the variation of its velocity $(v)$ with position $(x)$ is best represented by