149002 The shape of the curve representing the relation between the speed and kinetic energy of a moving object is

149003 Two bodies $A$ and $B$ have masses $20 \mathrm{~kg}$ and 5 $\mathrm{kg}$ respectively. Each one is acted upon by a force of $4 \mathrm{~kg}-\mathrm{wt}$. If they acquire the same kinetic energy in times $t_{A}$ and $t_{B}$, then the ratio $\frac{\mathbf{t}_{\mathrm{A}}}{\mathbf{t}_{\mathrm{B}}}$ is

149004 A running man has the same kinetic energy as
that of a boy of half his mass. The man speeds
up by 2 ms and the boy changes his speed by
x ms s $^{-1}$ so that the kinetic energies of the boy and the man are again equal. Then $x$ in ms ${ }^{-1}$ is :

149005 A particle is placed at the origin and force $F=$ $k x$ is acting on it (where, $k$ is positive constant). If $U(0)=0$ the graph of $U(x)$ versus $X$ will be, (where, $\mathrm{U}$ is the potential energy function)

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149002 The shape of the curve representing the relation between the speed and kinetic energy of a moving object is

149003 Two bodies $A$ and $B$ have masses $20 \mathrm{~kg}$ and 5 $\mathrm{kg}$ respectively. Each one is acted upon by a force of $4 \mathrm{~kg}-\mathrm{wt}$. If they acquire the same kinetic energy in times $t_{A}$ and $t_{B}$, then the ratio $\frac{\mathbf{t}_{\mathrm{A}}}{\mathbf{t}_{\mathrm{B}}}$ is

149004 A running man has the same kinetic energy as
that of a boy of half his mass. The man speeds
up by 2 ms and the boy changes his speed by
x ms s $^{-1}$ so that the kinetic energies of the boy and the man are again equal. Then $x$ in ms ${ }^{-1}$ is :

149005 A particle is placed at the origin and force $F=$ $k x$ is acting on it (where, $k$ is positive constant). If $U(0)=0$ the graph of $U(x)$ versus $X$ will be, (where, $\mathrm{U}$ is the potential energy function)

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149002 The shape of the curve representing the relation between the speed and kinetic energy of a moving object is

149003 Two bodies $A$ and $B$ have masses $20 \mathrm{~kg}$ and 5 $\mathrm{kg}$ respectively. Each one is acted upon by a force of $4 \mathrm{~kg}-\mathrm{wt}$. If they acquire the same kinetic energy in times $t_{A}$ and $t_{B}$, then the ratio $\frac{\mathbf{t}_{\mathrm{A}}}{\mathbf{t}_{\mathrm{B}}}$ is

149004 A running man has the same kinetic energy as
that of a boy of half his mass. The man speeds
up by 2 ms and the boy changes his speed by
x ms s $^{-1}$ so that the kinetic energies of the boy and the man are again equal. Then $x$ in ms ${ }^{-1}$ is :

149005 A particle is placed at the origin and force $F=$ $k x$ is acting on it (where, $k$ is positive constant). If $U(0)=0$ the graph of $U(x)$ versus $X$ will be, (where, $\mathrm{U}$ is the potential energy function)

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149002 The shape of the curve representing the relation between the speed and kinetic energy of a moving object is

149003 Two bodies $A$ and $B$ have masses $20 \mathrm{~kg}$ and 5 $\mathrm{kg}$ respectively. Each one is acted upon by a force of $4 \mathrm{~kg}-\mathrm{wt}$. If they acquire the same kinetic energy in times $t_{A}$ and $t_{B}$, then the ratio $\frac{\mathbf{t}_{\mathrm{A}}}{\mathbf{t}_{\mathrm{B}}}$ is

149004 A running man has the same kinetic energy as
that of a boy of half his mass. The man speeds
up by 2 ms and the boy changes his speed by
x ms s $^{-1}$ so that the kinetic energies of the boy and the man are again equal. Then $x$ in ms ${ }^{-1}$ is :

149005 A particle is placed at the origin and force $F=$ $k x$ is acting on it (where, $k$ is positive constant). If $U(0)=0$ the graph of $U(x)$ versus $X$ will be, (where, $\mathrm{U}$ is the potential energy function)

1

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