148723 A force of $(5+3 x) N$ acting on a body of mass $20 \mathrm{~kg}$ along the $x$-axis displaces it from $x=2 \mathrm{~m}$ to $x=6 \mathrm{~m}$. The work done by the force is

148724 A gardener pushes a lawn roller through a distance $20 \mathrm{~m}$. If he applies a force of $20 \mathrm{~kg}$-wt in a direction inclined at $60^{\circ}$ to the ground, the work done by him is

148725 A block of mass $2 \mathrm{~kg}$ is pulled at a constant speed with a taut rope along a frictionless plane that is inclined at $30^{\circ}$. Then the work done by the tension in the rope in pulling it a distance $4 \mathrm{~m}$ along the inclined plane in joule is(acceleration due to gravity $=10 \mathrm{~m} \mathrm{~s}^{-2}$ )

148726 If the momentum of a body is doubled, the kinetic energy becomes

148723 A force of $(5+3 x) N$ acting on a body of mass $20 \mathrm{~kg}$ along the $x$-axis displaces it from $x=2 \mathrm{~m}$ to $x=6 \mathrm{~m}$. The work done by the force is

148724 A gardener pushes a lawn roller through a distance $20 \mathrm{~m}$. If he applies a force of $20 \mathrm{~kg}$-wt in a direction inclined at $60^{\circ}$ to the ground, the work done by him is

148725 A block of mass $2 \mathrm{~kg}$ is pulled at a constant speed with a taut rope along a frictionless plane that is inclined at $30^{\circ}$. Then the work done by the tension in the rope in pulling it a distance $4 \mathrm{~m}$ along the inclined plane in joule is(acceleration due to gravity $=10 \mathrm{~m} \mathrm{~s}^{-2}$ )

148726 If the momentum of a body is doubled, the kinetic energy becomes

148723 A force of $(5+3 x) N$ acting on a body of mass $20 \mathrm{~kg}$ along the $x$-axis displaces it from $x=2 \mathrm{~m}$ to $x=6 \mathrm{~m}$. The work done by the force is

148724 A gardener pushes a lawn roller through a distance $20 \mathrm{~m}$. If he applies a force of $20 \mathrm{~kg}$-wt in a direction inclined at $60^{\circ}$ to the ground, the work done by him is

148725 A block of mass $2 \mathrm{~kg}$ is pulled at a constant speed with a taut rope along a frictionless plane that is inclined at $30^{\circ}$. Then the work done by the tension in the rope in pulling it a distance $4 \mathrm{~m}$ along the inclined plane in joule is(acceleration due to gravity $=10 \mathrm{~m} \mathrm{~s}^{-2}$ )

148726 If the momentum of a body is doubled, the kinetic energy becomes

148723 A force of $(5+3 x) N$ acting on a body of mass $20 \mathrm{~kg}$ along the $x$-axis displaces it from $x=2 \mathrm{~m}$ to $x=6 \mathrm{~m}$. The work done by the force is

148724 A gardener pushes a lawn roller through a distance $20 \mathrm{~m}$. If he applies a force of $20 \mathrm{~kg}$-wt in a direction inclined at $60^{\circ}$ to the ground, the work done by him is

148725 A block of mass $2 \mathrm{~kg}$ is pulled at a constant speed with a taut rope along a frictionless plane that is inclined at $30^{\circ}$. Then the work done by the tension in the rope in pulling it a distance $4 \mathrm{~m}$ along the inclined plane in joule is(acceleration due to gravity $=10 \mathrm{~m} \mathrm{~s}^{-2}$ )

148726 If the momentum of a body is doubled, the kinetic energy becomes