A300g marble is travelling at a speed of 3.00 m/s horizontally along a tabletop that is 1.00 m above the floor. the marble rolls up a ramp that launches it into the air. at the highest point in its flight the marble has a horizontal velocity of 1.10 m/s. if friction is negligible, how high above the floor is the marble at its highest point?

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?