The great red spot, a hurricane-like storm with twice the diameter of earth, is found on (a.)jupiter (b.)saturn (c.)titan (d.)the sun

Abby throws a ball straight up and times it. she sees that the ball goes by the top of a flagpole after 0.50 s and reaches the level of the top of the pole after a total elapsed time of 4.1 s. what was the speed of the ball at launch? neglect air resistance.