148993 A block of mass $1 \mathrm{~kg}$ is free to move along the $\mathrm{x}$-axis. It is at rest and from time $t=0$ onwards it is subjected to a time-dependent force $F(t)$ in the $x$-direction. The force $F(t)$ varies with $t$ as shown in figure. The kinetic energy of the block at $t=4 \mathrm{~s}$ is

148994 The force acting on a particle of mass $m$ moving along the $\mathbf{x}$-axis is given by $F(x)=A x^{2}-$ $B x$. Which one of the following is the potential energy of the particle?

148995 An athlet throws a shotput of mass $25 \mathrm{~kg}$ with an initial speed of $4 \mathrm{~ms}^{-1}$ at an angle of $45^{\circ}$ with the horizontal from a height of $2 \mathrm{~m}$ above the ground. Assuming air resistance to be negligible, the kinetic energy of the shotput when it just touches the ground is $\left(\mathrm{g}=10 \mathrm{~ms}^{-2}\right)$

148996 Two blocks $A \& B$ of mass $2 M$ and $M$ are moving along $X$ - direction on a frictionless plane. Their instantaneous position are given by $t$ and $t^{2}$, respectively. At a particular instant of time $T$, the kinetic energy of both particles are equal. Then,

148993 A block of mass $1 \mathrm{~kg}$ is free to move along the $\mathrm{x}$-axis. It is at rest and from time $t=0$ onwards it is subjected to a time-dependent force $F(t)$ in the $x$-direction. The force $F(t)$ varies with $t$ as shown in figure. The kinetic energy of the block at $t=4 \mathrm{~s}$ is

148994 The force acting on a particle of mass $m$ moving along the $\mathbf{x}$-axis is given by $F(x)=A x^{2}-$ $B x$. Which one of the following is the potential energy of the particle?

148995 An athlet throws a shotput of mass $25 \mathrm{~kg}$ with an initial speed of $4 \mathrm{~ms}^{-1}$ at an angle of $45^{\circ}$ with the horizontal from a height of $2 \mathrm{~m}$ above the ground. Assuming air resistance to be negligible, the kinetic energy of the shotput when it just touches the ground is $\left(\mathrm{g}=10 \mathrm{~ms}^{-2}\right)$

148996 Two blocks $A \& B$ of mass $2 M$ and $M$ are moving along $X$ - direction on a frictionless plane. Their instantaneous position are given by $t$ and $t^{2}$, respectively. At a particular instant of time $T$, the kinetic energy of both particles are equal. Then,

148993 A block of mass $1 \mathrm{~kg}$ is free to move along the $\mathrm{x}$-axis. It is at rest and from time $t=0$ onwards it is subjected to a time-dependent force $F(t)$ in the $x$-direction. The force $F(t)$ varies with $t$ as shown in figure. The kinetic energy of the block at $t=4 \mathrm{~s}$ is

148994 The force acting on a particle of mass $m$ moving along the $\mathbf{x}$-axis is given by $F(x)=A x^{2}-$ $B x$. Which one of the following is the potential energy of the particle?

148995 An athlet throws a shotput of mass $25 \mathrm{~kg}$ with an initial speed of $4 \mathrm{~ms}^{-1}$ at an angle of $45^{\circ}$ with the horizontal from a height of $2 \mathrm{~m}$ above the ground. Assuming air resistance to be negligible, the kinetic energy of the shotput when it just touches the ground is $\left(\mathrm{g}=10 \mathrm{~ms}^{-2}\right)$

148996 Two blocks $A \& B$ of mass $2 M$ and $M$ are moving along $X$ - direction on a frictionless plane. Their instantaneous position are given by $t$ and $t^{2}$, respectively. At a particular instant of time $T$, the kinetic energy of both particles are equal. Then,

148993 A block of mass $1 \mathrm{~kg}$ is free to move along the $\mathrm{x}$-axis. It is at rest and from time $t=0$ onwards it is subjected to a time-dependent force $F(t)$ in the $x$-direction. The force $F(t)$ varies with $t$ as shown in figure. The kinetic energy of the block at $t=4 \mathrm{~s}$ is

148994 The force acting on a particle of mass $m$ moving along the $\mathbf{x}$-axis is given by $F(x)=A x^{2}-$ $B x$. Which one of the following is the potential energy of the particle?

148995 An athlet throws a shotput of mass $25 \mathrm{~kg}$ with an initial speed of $4 \mathrm{~ms}^{-1}$ at an angle of $45^{\circ}$ with the horizontal from a height of $2 \mathrm{~m}$ above the ground. Assuming air resistance to be negligible, the kinetic energy of the shotput when it just touches the ground is $\left(\mathrm{g}=10 \mathrm{~ms}^{-2}\right)$

148996 Two blocks $A \& B$ of mass $2 M$ and $M$ are moving along $X$ - direction on a frictionless plane. Their instantaneous position are given by $t$ and $t^{2}$, respectively. At a particular instant of time $T$, the kinetic energy of both particles are equal. Then,