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xvxvxv  Aug 29, 2014

Best Answer 

 #1
avatar+26397 
+15

Kinetic energy is (1/2)*mass*velocity2.

Work out (1/2)m1*v12 + (1/2)m2*v22 for the blocks before the collision and then after the collision.

If the energies are the same the collision was elastic; if energy after is less than energy before, it is inelastic; if energy after is greater than energy before, there is a gain in kinetic energy.

Alan  Aug 29, 2014
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2+0 Answers

 #1
avatar+26397 
+15
Best Answer

Kinetic energy is (1/2)*mass*velocity2.

Work out (1/2)m1*v12 + (1/2)m2*v22 for the blocks before the collision and then after the collision.

If the energies are the same the collision was elastic; if energy after is less than energy before, it is inelastic; if energy after is greater than energy before, there is a gain in kinetic energy.

Alan  Aug 29, 2014
 #2
avatar+1828 
0

amaizing alan =D  ... Now its very clear 

and the answer is inelastic 

xvxvxv  Aug 29, 2014

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