A particle is uncharged and is thrown vertically upward from ground level with a speed of 25.0m/s. As a result, it attains amaximum height h. The particle is then given a positivecharge +q and reaches the same maximum height h when thrownvertically upward with a speed of 30.0m/s. The electricpotential at the height h exceeds the electric potential at groundlevel. Finally the particle is given a negative charge-q. Ignoring air resistance, determine the speed with which the negatively charged particle must be thrown vertically upward sothat it attains exactly the maximum height h. In all three situations, be sure to include the effect of gravity.