After being stuck by a bowling ball, a 1.8 kg bowling pin slides to the right at 3.6 m/s and collides head-on with another 1.8 kg bowling pin initially at rest. What is the final velocity of the second pin if the first pin moves to the right at 0.54 m/s after the collision

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?