Physics
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 puttyblock system rise above the original position of the block?
____ cm

Energy is not conserved.
momentum is conserved.
momentum putty=momentumclump
.07*5.8=(.4+.07)Vi solve for Vi upward.
Vi^2=(.4+.07)g h solve for h.
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