If velocity of a body is twice of previous velocity, then kinetic energy will become

A $120\, g$ mass has a velocity $\vec v = 2\hat i + 5\hat j\,m{s^{ - 1}}$ at a certain instant. Its kinetic energy is .................. $\mathrm{J}$

The machine as shown has $2$ rods of length $1\, m$ connected by a pivot at the top. The end of one rod is connected to the floor by a stationary pivot and the end of the other rod has a roller that rolls along the floor  in a slot As the roller goes back and forth, a $2\, kg$ weight moves up and down. If the roller is moving towards right at a constant speed, the weight moves up with a

A body of mass $m$ moves in a circular path with uniform angular velocity. The motion of the body has constant

A graph between kinetic energy and momentum of a particle is plotted as shown in the figure. The mass of the moving particle is ........ $kg$.

The force constant of a weightless spring is $16 \,N/m$. A body of mass $1.0\, kg$ suspended from it is pulled down through $5\, cm$ and then released. The maximum kinetic energy of the system (spring + body) will be