Question

A man of mass $50kg$ is walking on a long wooden board of mass $200kg$ (as shown in the figure). The wooden board is initially at rest on a frictionless ice surface. If the man walks with a velocity of $V=1\frac{m}{s}$ in the positive $x$ direction relative to the wooden board. find the velocity of the board in $\frac{m}{s}$ Velocity is positive in the positive x direction_______

• A. 0.2

Answer 1

The correct option is A 0.2
Initial momentum=final momentum

$50\times 1=(50+200)v$

$\therefore v=0.2\frac{m}{sec}$