Two masses of $1 \,gm$ and $4 \,gm$ are moving with equal kinetic energies. The ratio of the magnitudes of their linear momenta is
$4:1$
$\sqrt 2 :1$
$1:2$
$1:16$
If the kinetic energy of a body increases by $0.1\%$, the percent increase of its momentum will be .............. $\%$
The kinetic energy of a body decreases by $36\%$. The decrease in its momentum is ............... $\%$
A rifle bullet loses $1/20^{th}$ of its velocity in passing through a wooden plank. The least number of planks required to stop the bullet is :-
The energy which an ${e^ - }$ acquires when accelerated through a potential difference of $1 \,volt$ is called
If the K.E. of a particle is doubled, then its momentum will