[问答题]
Two identical arrows, one with twiu+9 tjjp,w8dr ce the speed of the on:r8twcw5a;+c1 x c3mh ot a8cther, are fired into a bale of hay. Assuming the hay exerts a com h3cca 1w8c5tw:+ o; xrtcn8anstant frictional force on the arrows, the faster arrow will penetrate how much farther than the slower arrow? Explain.
