The coaster begins with a nearly 2.9 second free fall along a 90 degree drop. What is the speed?

vf=28.449m/s~28.4m/s

Explanation:

vi=0m/s (initial velocity)

a=g=9.81m/s² (acceleration due to gravity)

vf=? (final velocity) - unknown

t=2.9s (time)

equation (velocity equation) vf=vi*t+a*t

vf=0m/s*2.9s+9.81m/s²*2.9s

vf=28.499m/s~28.4m/s