On a day when the water is flowing relatively gently water in the Niagare horizo

Question

On a day when the water is flowing relatively gently water in the Niagare horizontally at 4.5 m/s before over Niagara After moving the edge, the water drops 53 m to the water below. You may want to review (pages 83 - 85) If we ignore air resistance, how much time does it take for the water to go from the top of the falls to the bottom? Express your answer to two significant figures and include the appropriate units. How far does the water move horizontally during this time? Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

a) t = sqrt(2h/g) = sqrt(2(53)/9.81) = 3.29 s

b) Horizontal range = d

Range (d) = 4.5t = 14.8 m

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