A 50 gram bullet is fired into a block of mass 4.0kg, initially at rest at the edge of a frictionless table of height 0.8m. The bullet remains in the block. and after impact the block lands a distance of 1.4 m from the bottom of the table. determine the loss of kinetic energy of the system, and using the conservabito of energy for the bullet-block system. determine the speed of the system before it strikes the ground.