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.........$cm$
A particle is moving in a straight line and passes through a point $O$ with a velocity of $6\;m{s^{ - 1}}.$ The particle moves with a constant retardation of $2\;m{s^{ - 2}}\;$ for $4$ s and there after moves with constant velocity. How long after leaving $O$ does the particle return to $O$..........$s$
A body starts from rest with uniform acceleration $a,$ its velocity after $n\,seconds$ is $v$. The displacement of the body in last $3\,s$ is : (assume total time of journey from $0$ to $n\,seconds$ )