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<u>Let's Slove :</u><u> </u>



The answer & explanation for this question is given in the attachment below.
Hinge joints would be your elbow, your knee and, believe it or not, your ankle as well!
1.) potential energy
2.)potential and kinetic
3.)The roller coaster car has the most kinetic energy at point X i know this because the car is moving and kinetic energy has the power to move or change things therefore point X is when the roller coaster car has the most energy.
4.)potential energy
5.)kinetic energy
6.) potential and kinetic energy