A skydiver is falling from the sky at a velocity of 50 m/s when they open their parachute they slow down to 5m/s in 3 seconds What is the average acceleration? (I think -15m/s2)
What is the average force of air resistance as the skydiver is slowing?

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=