A 0.400 kg block of wood hangs from the ceiling by a string, and a7.4x10^-2 kg wad of putty is thrown straight upward, striking thebottom of the block with a speed of 5.75 m/s. The wad of putty sticks to the block.
Is the mechanical energy of this system conserved?
How high does the putty-block system rise above the originalposition of the block?