A small block of mass m is placed on a plank of equal mass m

Last updated: 6/4/2023

A small block of mass m is placed on a plank of equal mass m All the surfaces are smooth The block is pushed and given an initial speed of u as shown in the diagram The block slides on the horizontal surface and then breaks off the plank at a negligible height in the vertical direction with respect to the plank U A the velocity of the plank when the block breaks the contact is 2 Y U 2 B the velocity of the block when it breaks the contact with the plank is Im 1 m horizontal surface 2 C the ratio of kinetic energies of the block and the plank when the block breaks the contact is 3 1 D the path of the block while it is in the air is a parabola with respect to the ground and a vertical path with respect to the plank