Answer:
vf=28.449m/s~28.4m/s
Step-by-step 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