人 仿/-人人~
Sea 說 為
coorqdinate at theti 4二0.27/m/S21. (am When Qoes 說上
全 賠 St wo 7 說 生 說
me (ce) How fastis itmoving, and in what directiom?
你宮下
RARS) (52 20
toss a protein 說 ,l1閃 /z0'(選3
Jetermine the in
395 stope, as snownm $Y3nKMg.
當 to your hiking companion located 8.6G m up
velocity vector so that the barr' itCs rmovitn包 horyzontaVy-
eaches your friend,