the electrical field in a plane wave is described by the equation (k>0): what direction is the wave traveling? explain how you can tell

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

the area between the graph and the t axis

answer///isobars;