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The superhero Green Lantern steps from the top of a tall building. He falls freely from rest to the ground, falling half the total distance
The superhero Green Lantern steps from the top of a tall building. He falls freely from rest to the ground, falling half the total distance to the ground during the last of his fall Figure What is the height of the building?
Part B
You are told that Green Lantern falls treely from rest. What does this imply about his initial velocity?
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The initial velocity is equal to
The initial velocity depends on the height of the building.
The initial velocity has a small nonzero value, so he can start moving
The initial velocity is equal to zero.
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Part
Take the direction of the positive axis upward and its origin at the starting point.
You can divide Green Lantern's fall into two parts: from the top of the building to the halfway point and from the hallway point to the ground. You know that the second part of the fall lasts Decide what you would need to know about Green Lantern's motion at the halkway point in order to solve for the target variable Then choose two equations, one for the first part of the fall and one for the second part, that youll use together to find an expression for
Select a set of two equations that apply.
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where is the speed at the midpoint
where is the speed at the midpoint and is the time to fly the first half
where is the time to fly the first half
where is the time to fly the first half
where is the speed at the midpoint
Figure
of
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