Question

A person is running from a cliff into a pond. The cliff has a height of 10.0m above the water but it is not strictly vertical, it slopes down to the pond at an angle of 40 degrees with respect to the vertical. What is the minimum speed the person needs to jump from the cliff in order to settle into the water?
the horizontal distance to the edge of the water is
... 10.0 m * tan(40º)

the time to fall the 10 m is
... √(2 * 10 / g)

divide distance by time to find the speed

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