Please answer this so you get the brainlist

Part a constants huck finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion what is huck's velocity (speed and direction) relative to the river bank? express your answer to three significant figures and include the appropriate units. relative to the shore)

Which one of the following research methods can show cause and effect

The softest and hardest minerals are: softest hardest