A particle is placed at the point A of a frictionless track ABC as shown in figure. It is pushed slightly towards right. Its speed when it reaches the point B is ($g=10m{s}^{-2}$)

Q. As shown in the figure, a particle of mass $10\text{kg}$ is placed at a point $A$. When the particle is slightly displaced to its right, it starts moving and reaches the point $B$. The speed of the particle at $B$ is $x\text{m/s}$. (Take $g=10{\text{m/s}}^2$) The value of $x$ to the nearest integer is .

Q. A particle is projected at $20m/s$ horizontally. What is its speed at $5\sec \left(g=10m/s^2\right)$:-

Q. A block of mass m is placed at point A on a rough track as shown in the figure. If slightly pushed towards right, it stops at point B of the track. Calculate the work done by the frictional force on the block during its transit from A to B.

Q. A stone projected vertically up with a velocity of $10m{s}^{-1}$ reaches the highest point after $2$ s. If it is thrown with a velocity of $20m{s}^{-1}$, it reaches the highest point after a time of

Q. A block of mass 1 kg is placed at point A of a rough track shown in figure (8-E6). If slightly pushed towards right, it stops at point B of the track. Calculate the work done by the frictional force on the block during its transit from A to B.
Figure