148777 A force of $4 \mathrm{~N}$ acts on a $10 \mathrm{~kg}$ body initially at rest. Let $W_{1}$ is work done by force during 0 $\leq t \leq 1$ s. Likewise $W_{2}$ is the work done by force during $1 \mathrm{~s} \leq \mathrm{t} \leq 2 \mathrm{~s}$, where $\mathrm{t}$ is time in second. The ratio $\frac{W_{2}}{W_{1}}$ is

148778 A boy pushes a toy box $2.0 \mathrm{~m}$ along the floor by means of a force of $10 \mathrm{~N}$ directed downward at an angle of $60^{\circ}$ to the horizontal. The work done by the boy is

148779 A man pushes the wall and fails to displace it. He does

148780 An automatic gun fires 360 bullets per minute with a speed of $360 \mathrm{~km} / \mathrm{h}$. If each bullet weight $20 \mathrm{~g}$, the power of the gun is

148781 A force $F=20+10 y$ acts on a particle in $y$ direction, where $F$ is in Newton and $y$ in meter. Work done by this force to move the particle from $\mathrm{y}=0$ to $\mathrm{y}=1 \mathrm{~m}$ is

148777 A force of $4 \mathrm{~N}$ acts on a $10 \mathrm{~kg}$ body initially at rest. Let $W_{1}$ is work done by force during 0 $\leq t \leq 1$ s. Likewise $W_{2}$ is the work done by force during $1 \mathrm{~s} \leq \mathrm{t} \leq 2 \mathrm{~s}$, where $\mathrm{t}$ is time in second. The ratio $\frac{W_{2}}{W_{1}}$ is

148778 A boy pushes a toy box $2.0 \mathrm{~m}$ along the floor by means of a force of $10 \mathrm{~N}$ directed downward at an angle of $60^{\circ}$ to the horizontal. The work done by the boy is

148779 A man pushes the wall and fails to displace it. He does

148780 An automatic gun fires 360 bullets per minute with a speed of $360 \mathrm{~km} / \mathrm{h}$. If each bullet weight $20 \mathrm{~g}$, the power of the gun is

148781 A force $F=20+10 y$ acts on a particle in $y$ direction, where $F$ is in Newton and $y$ in meter. Work done by this force to move the particle from $\mathrm{y}=0$ to $\mathrm{y}=1 \mathrm{~m}$ is

148777 A force of $4 \mathrm{~N}$ acts on a $10 \mathrm{~kg}$ body initially at rest. Let $W_{1}$ is work done by force during 0 $\leq t \leq 1$ s. Likewise $W_{2}$ is the work done by force during $1 \mathrm{~s} \leq \mathrm{t} \leq 2 \mathrm{~s}$, where $\mathrm{t}$ is time in second. The ratio $\frac{W_{2}}{W_{1}}$ is

148778 A boy pushes a toy box $2.0 \mathrm{~m}$ along the floor by means of a force of $10 \mathrm{~N}$ directed downward at an angle of $60^{\circ}$ to the horizontal. The work done by the boy is

148779 A man pushes the wall and fails to displace it. He does

148780 An automatic gun fires 360 bullets per minute with a speed of $360 \mathrm{~km} / \mathrm{h}$. If each bullet weight $20 \mathrm{~g}$, the power of the gun is

148781 A force $F=20+10 y$ acts on a particle in $y$ direction, where $F$ is in Newton and $y$ in meter. Work done by this force to move the particle from $\mathrm{y}=0$ to $\mathrm{y}=1 \mathrm{~m}$ is

148777 A force of $4 \mathrm{~N}$ acts on a $10 \mathrm{~kg}$ body initially at rest. Let $W_{1}$ is work done by force during 0 $\leq t \leq 1$ s. Likewise $W_{2}$ is the work done by force during $1 \mathrm{~s} \leq \mathrm{t} \leq 2 \mathrm{~s}$, where $\mathrm{t}$ is time in second. The ratio $\frac{W_{2}}{W_{1}}$ is

148778 A boy pushes a toy box $2.0 \mathrm{~m}$ along the floor by means of a force of $10 \mathrm{~N}$ directed downward at an angle of $60^{\circ}$ to the horizontal. The work done by the boy is

148779 A man pushes the wall and fails to displace it. He does

148780 An automatic gun fires 360 bullets per minute with a speed of $360 \mathrm{~km} / \mathrm{h}$. If each bullet weight $20 \mathrm{~g}$, the power of the gun is

148781 A force $F=20+10 y$ acts on a particle in $y$ direction, where $F$ is in Newton and $y$ in meter. Work done by this force to move the particle from $\mathrm{y}=0$ to $\mathrm{y}=1 \mathrm{~m}$ is

148777 A force of $4 \mathrm{~N}$ acts on a $10 \mathrm{~kg}$ body initially at rest. Let $W_{1}$ is work done by force during 0 $\leq t \leq 1$ s. Likewise $W_{2}$ is the work done by force during $1 \mathrm{~s} \leq \mathrm{t} \leq 2 \mathrm{~s}$, where $\mathrm{t}$ is time in second. The ratio $\frac{W_{2}}{W_{1}}$ is

148778 A boy pushes a toy box $2.0 \mathrm{~m}$ along the floor by means of a force of $10 \mathrm{~N}$ directed downward at an angle of $60^{\circ}$ to the horizontal. The work done by the boy is

148779 A man pushes the wall and fails to displace it. He does

148780 An automatic gun fires 360 bullets per minute with a speed of $360 \mathrm{~km} / \mathrm{h}$. If each bullet weight $20 \mathrm{~g}$, the power of the gun is

148781 A force $F=20+10 y$ acts on a particle in $y$ direction, where $F$ is in Newton and $y$ in meter. Work done by this force to move the particle from $\mathrm{y}=0$ to $\mathrm{y}=1 \mathrm{~m}$ is