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