When does Rigor Mortis start? Is it permanent?

After a person or animal dies.

Explanation:

After a person or animal dies, the joints stiffen and become locked in place. this stiffening is called rigor mortis. No it is not permanent because chemicals in the body begin to break down and rigor mortis goes away after approximately 72 hours.

the correct answer is(the type of energy described here is potential energy.)

explanation: now if the person holding the bow and arrow has now let go. the arrow shoots forward toward its target. the   type of energy then becomes

b is the best answer for this question.