Please help A rock is thrown horizontally from a cliff at 40 m/s. If the rock lands 155 meters from the base of the cliff. How long was the rock in the air?

Aregular polygon has angkes of size 150° each.how many side has the polygon

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)

What is the most useful equation for electric power?