Meghann Moira Lanning is an Australian woman cricketer and an opening batsman in the team. In her second One-Day International match in 2011, she become Australia's youngest century-maker (male or female) at the age of 18 years and 288 days. In a rare mishit, Lanning hit a cricket ball vertically upward with an initial velocity of +21.1 m/s. Neglecting air friction (resistance), what is the velocity (in m/s) of the ball after 1.5 s? Hint: Answer to one decimal place.  Use negative to indicate the downward direction relative to its starting position.