[填空题]
An 88-g arrow is fired from a bfu;ofcsn;v9 qb8 6 ;ouy:rom9 ow whose string exerts an sh;z12e z mmudxx 2d40qekl-, average force of 110 N on the arrow over a distance of 78 cm. What is the speed of the arrow as it 41z x2edmk xu2q s0,m-ledhz;leaves the bow? m/s
