Huck finn walks at a speed of 070 across his raft that is, Ask an Expert

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Huck Finn walks at a speed of 0.70 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 1.50 relative to the river bank.

a) What is Huck's speed relative to the river bank?
b) What is Huck's speed direction to the river bank?

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