A child goes down slide starting from rest if the length of the slide is to him and it takes a child three seconds to go down the slide what is the child’s acceleration

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)