Forest drops a rock from a bridge to the water below. The rock entered the water at the speed of 19.6 m/s. How long did it take the pebble to reach the water from the bridge? [S=d/t]

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

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hope this !