The distance traveled by a snowball thrown straight down from the top of a bluff can be calculated with the equation d=ut+12gt2, where d is the distance traveled in meters, u is the initial velocity in meters per second, t is the time in seconds, and g is the acceleration due to gravity, which is 9.8ms2. if the snowball traveled 200 meters in 5 seconds, what was its initial velocity? a 3.1ms b 4.9ms c 9.8ms d 15.5ms