Ateam of sled dogs starts pulling a sled at the start of a dog-sledding race. the total mass of the sled is
205 kg, including the driver and load, and the net force acting on the sled is 744 n to the north. what is
the sled's 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?