It represents the principle that the difference between the aggregate accelerating forces of a system and that of the retarding forces is equal to one half the " vis viva " accumulated or lost in the system while the work is being done.
12.
But the idea gained theoretical support in 1998 with findings suggesting that the expansion of the universe is accelerating, and that the accelerating force or negative gravity _ the manifestation of the cosmological constant _ overtook the force of gravity some time in the last few billion years.
13.
Consistent with this notion, cMyBP-C knockout mice exhibit an abnormal systolic timecourse, with a shortened elastance timecourse and lower peak elastance in vivo, and an accelerated force development in isolated, skinned cardiac fibers suggesting that cMyBP-C is required to constrain the crossbridges in order to sustain a normal ejection.
