What is it called when a body covers certain distance per unit time​

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)

In the first law of thermodynamics, triangle e=q-w, what does q stand for

In a good thermo flask the main cause of heat loss is