2. Two mylar balloons are rubbed against your head so they get a charge. The force of repulsion is measured to be 3.59x10^-3 N when placed 0.50 meters apart. What is the charge on each balloon? Where electrons moved onto or off of the balloons? How many?​

The independent variable would be the fertilizer as it is what the dependent variable (the growth of grass) depends on.

Since you have not included the experiment situation and the data, of course, i can not give you specific details about it. but i can you with this question.1) i will assume that the motion is projectile (parabolic) motion.2) yes, the horizontal distance depends on the horizontal velocity as, naming vx the horizontal velocity and t the time, it is: x = vx × t3) now, observe that the flight time depends on the vertical velocity as, naming voy the initial vertical velocity, t the time and y the vertical distance before reaching the ground: y = yo + voy×t - gt² / 2.the higher the initial vertical velocity (voy) the longer the object will be flying and so t will be higher in the equation for the horizontal distance.that explains the relationship between the horizontal distance and the horizontal velocity.