Homework Help: AP PHYSICS

Posted by paul on Monday, November 15, 2010 at 12:25am.

the height of the upper falls at Yellowstone falls is 33.2m. when the water reaches the botton of the falls, its speed is 25.8 m/s. neglecting air resistance, what is the speed of the water at the to of te falls.

AP PHYSICS - drwls, Monday, November 15, 2010 at 6:35am
The water acquires a vertical velocity component during the fall equal to
Vy = sqrt(2gH) = 25.5 m/s. Its velocity at the bottom is 25.8 m/s, so the horizontal component at the bottom must be sqrt[(25.8)^2 - (25.5)^2] = 3.9 m/s

That must be the horizontal component at the top also, since it does not change during the fall. It is the velocity magnitude there.

Answer this Question

Related Questions

Physics - The height of a certain waterfall is 33.2 m. When the water reaches ...
PHYSICS - The highest recorded waterfall in the world is found at Angel Falls ...
math - The upper Angel Falls, the highest waterfall on Earth, is 750m higher ...
physics - When water falls from the top of the waterfall,at the victoria falls ...
physics - the great gray-green, greasy zambezi river flowa over victoria falls ...
physics - the great gray-green, greasy zambezi river flowa over victoria falls ...
physics - For an interesting physics field trip, we visit Tahquamenon Falls in ...
economics - When demand falls and supply remains the same, equilibrium price ...
physics - a rain drop falls from rest in an atmosphere saturated with water ...
physics......... - The waterfall "Angel Falls" in Venezuela is the ...

For Further Reading

First Name:
School Subject:
Answer: