A bullet is fired from a gun. If the gun recoils freely, the kinetic energy of the gun will be
Less than that of bullet
Equal to that of bullet
Greater than that of bullet
Zero
Two bodies of masses $m$ and $4 \,m$ are moving with equal $K.E.$ The ratio of their linear momentums is
The force $\vec F\, = F\hat i$ on a particle of mass $2\, kg$, moving along the $x-$ axis is given in the figure as a function of its position $x$. The particle is moving with a velocity of $5\, m/s$ along the $x-$ axis at $x\, = 0$. What is the kinetic energy of the particle at $x\,= 8\, m$ ? .................. $\mathrm{J}$
A $50\,kg$ man with $20\,kg$ load on his head climbs up $20$ steps of $0.25\,m$ height each. The work done in climbing is......$J$
The adjoining diagram shows the velocity versus time plot for a particle. The work done by the force on the particle is positive from
Is kinetic energy a scalar quantity or vector quantity ?