Atrain's velocity is slowly decreasing as it approaches a station. about 1 km before it reaches the station, several stowaways jump off the train. what happens to the amount of acceleration if the force remains constant? assume the train is traveling in the positive direction.

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=