Huck Finn walks at a speed of 0.70 {rm m/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 1.60 {rm m/s} relative to the river bank. What is Huck's speed relative to the river bank? What is Huck's speed direction to the river bank?