Mechanical energy is the sum of potential energy and kinetic energy present in the components of a mechanical system. It is the energy associated with the motion and position of an object.I think it is supposed to be mechanical energy. That is where energy is present in an object because of it's movement's.R. the sum of kinetic and potential energy present at the same time. Mechanical energy is the sum of potential energy and kinetic energy present in the components of a mechanical system. It is the energy associated with the motion and position of an object. I think it is supposed to be mechanical energy.
How to Do the Hip and Lower Back Stretch. 1  Begin in a forward lunge position with your right leg forward. Drop your left knee to the ground. 2  Place your right elbow on the inside of your right knee as pictured. 3  Press your right elbow gently into your right knee and twist your torso to the left.
Start the stretch by lying on your stomach with your knees together and bent at a 90-degree angle. Raise your chest and stomach off the ground while keeping your pelvis and thighs on the floor. Reach back with your arms and grasp your ankles as you pull your legs up and push your chest out. Keep your neck even with your spine by looking at the wall in front of you during the entire stretch. Hold this stretch for 30 seconds and then slowly lower your upper body and legs down to the floor.