An astronaut hits a golf ball horizontally from the top of a lunar mountain so fast that it goes into circular orbit. Whats its orbital period?

● Equations B ○ W = F ·∫dr = F| |− r cosθ AB |B A| A ○ W = F · d = Fdcosθ ○ W =− mg(y −By )A 1 2 2 ○ W = k2x B − xA) 1 p2 ○ KE = m2 = 2 2m ○ W net= K B K A ΔW ○ Power avg = ΔT ○ ΔPE AB = PE B PE =−AW AB ○ KE i PE =iKE − Pf f ○ ΔU grav=− W grav, ABmg(y B y )A ○ U(y) = mgy + C 1 2 2 ○ ΔU =− W AB = 2(x B − x A) 1 2 ○ U(x) = 2x + C ○ W − ∮ E · dr = 0 closed path cons dx 2(E−PE)