Monday
Monday's power manifests through aggregate human response rather than individual force. The day commands the simultaneous attention of approximately 3.5 billion working adults, creating what economists term the 'Monday mobilisation effect': the largest coordinated shift in human activity occurring on any regular basis. Energy grids experience their weekly peaks as offices illuminate en masse.
The economic power Monday wields is staggering. Productivity losses attributed to Monday malaise exceed $500 billion annually in the United States alone. Stock markets historically perform 0.14 percent worse on Mondays than other trading days, a phenomenon studied extensively by financial academics. Monday moves markets, moods, and millions of metric tonnes of commuter traffic simultaneously.
Kangaroo
The kangaroo's raw power is immediately quantifiable and physically impressive. A male red kangaroo can generate kick forces exceeding 759 Newtons, sufficient to rupture internal organs, shatter bones, and crush skulls. Their leg muscles comprise 15 percent of total body mass, a proportion that dwarfs that of Olympic sprinters. When balanced on their muscular tails, they become biological tripods capable of sustained combat.
At full hop, kangaroos achieve speeds of 56 kilometres per hour, maintaining this pace across distances that would exhaust horses. Their energy efficiency during locomotion actually improves at higher speeds, an engineering feat unmatched by any machine. A collision with a vehicle at highway speeds typically destroys the vehicle whilst the kangaroo's fate varies considerably.