When velocity changes by the same amount over each time interval, acceleration is?
zero. constant.
positive.
negative.

Which of the following is an example of units for speed

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?

Photons with the highest energy have the longest period