Posted by hpj on Wednesday, October 27, 2010 at 6:18pm.
for a) w= 1/2 (m)(v^2) so just plug in the work that is given and the mass, and solve for v.
for b) w=fd so f=w/d so plug in work and distance, convert as needed, and you're set. Hope I helped, even though I answered your question almost 3 years late!
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