an object is traveling at a constant velocity of 12 m/s when it experiences a constant acceleration of 2.5 m/s^2 for a time of 20s. what will it’s velocity be after that acceleration

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?