《Otherworldly General Store》 "~Goods that seem to exist in another world~" ~・~・~・~・~・~・~・~・~・~ lim（Δt→）0Δx/Δt=dx/dt=v ∴ v2⑵−v1(2)=a2t2(2)−a2t(1)2 =2x2a−2x1a =2a(x2−x1) AC：a=dv/dt=d2x/dt2 SP：v=∫adt=at+v0 DIS(dis)：x=∫vdt=∫(at+v0)dt =1/2at2+v0t+x0 \v→|=√v2x+v2y=√(dx/dt)2+(dy/dt)2 t1∫t2√(dx/dt)2+(dy/dt)2dt Through the extraordinary calculation processing ability of a certain alchemist, that pocket watch has evolved into an acceleration calculation magic device. When magic and sorcery merge, a new world will open. "Victoria Kingdom" That is the peninsula at the westernmost edge. A country where steam and gears, and magic, are fused. Its unique civilization and magic devices are called "Steampunk." Movement: Quartz Diameter: About 2.3cm Thickness: About 2.3cm Total Length of Chain: About 80 cm