Which of the following statements is correct ?
Kinetic energy of a system can be changed without changing its momentum
Kinetic energy of a system cannot be changed without changing its momentum.
Momentum of a system cannot be changed without changing its kinetic energy
Body cannot have energy without having momentum.
A particle of mass $m$ at rest is acted upon by a force $F$ for a time $t$. Its Kinetic energy after an interval $t$ is
A body of mass $(4m)$ is lying in $x-y$ plane at rest. It suddenly explodes into three pieces. Two pieces, each of mass $(m)$ move perpendicular to each other with equal speeds $(v).$ The total kinetic energy generated due to explosion is................. $mv^2$
For the pulley system the kinetic energy of the $6\,kg$ block after $5\,s$ is ............ $\mathrm{J}$
particle is projected from level ground. Its kinetic energy $K$ changes due to gravity so $\frac{{{K_{\max }}}}{{{K_{\min }}}} = 9$. The ratio of the range to the maximum height attained during its flight is
If momentum of a body is increased by $20 \%$, then its kinetic energy increases by$....\%$