Answered

Two objects, A and B, each of mass 0.22 kg, are moving at 0.52 m/s directly toward each other. A completely inelastic collision occurs and both objects stop. What percentage of the total kinetic energy is changed into other forms of energy?


A0 percent

B25 percent

C50 percent

D100 percent

Verified Answer :

skyp

If we use conservation of momentum we can see that the objects come to a stop after they collide.

mv + mv = mv

(0.22)(0.52) + (0.22)(-0.52) = mv

0 = mv

So because they don't move after the collision that means they don't have any kinetic energy, therefore 100% of the initial kinetic energy has been changed into other forms of energy (e.g. sound and heat)

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