Abaseball player at second base throws a ball 90 feet to the player at first base. the ball is thrown at five feet above the ground at a velocity of 50 miles per hour at an angle 10° above the horizontal at what height does the player at first base catch the ball? draw a diagram of the problem consistent with the verbal model.

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?