posted by Josie .
A 0.400 kg block of wood hangs from the ceiling by a string, and a 0.0700 kg wad of putty is thrown straight upward, striking the bottom of the block with a speed of 5.80 m/s. The wad of putty sticks to the block.
Is the mechanical energy of this system conserved?
yes or no
(b) How high does the putty-block system rise above the original position of the block?
Energy is not conserved.
momentum is conserved.
.07*5.8=(.4+.07)Vi solve for Vi upward.
Vi^2=(.4+.07)g h solve for h.