[填空题]
Huck Finn walks at a bk6 7x0r8pj7-rcqp3oe(iwecr rcq aw64g *1u speed o5j q7s ,(qerw-wohuc/f 0.60$ \mathrm{~m} / \mathrm{s}$ across his raft (that is, he walks perpendicular to the raft's motion relative to the shore). The raft is traveling down the Mississippi River at a speed of 1.70$ \mathrm{~m} / \mathrm{s}$ relative to the river bank (Fig. 3-38). What is Huck's velocity (speed and direction) relative to the river bank?Magnitude = Direction = $^{\circ}$
