A block of mass $0.50\ kg$ is moving with a speedof $2.00$ $ms^{-1}$ on a smooth surface. It strikes another mass of $1.00\ kg$ and then they move together as a single body. The energy loss during the collision is ............. $\mathrm{J}$
$0.34$
$0.16 $
$1$
$0.67$
A car accelerates from rest to $u\,m / s$. The energy spent in this process is $E\,J$. The energy required to accelerate the car from $u\,m / s$ to $2u\,m / s$ is $nE\,J$. The value of $n$ is ..............
Two bodies of different masses ${m_1}$ and ${m_2}$ have equal momenta. Their kinetic energies ${E_1}$ and ${E_2}$ are in the ratio
Consider a car moving on a straight road with a speed of $100\, m/s$. The distance at which car can be stopped is ........ $m.$ $[{\mu _k} = 0.5]$
If work is positive, then kinetic energy increases or decreases ?
The energy required to break one bond in $DNA$ is $10^{-20}\, J.$ This value in $eV$ is nearly