Stones being dropped and thrown from building

In summary, the conversation discusses a scenario where a stone is dropped from a building and another stone is thrown straight down 1.90 seconds later with an initial speed of 29.0 m/s. The two stones land at the same time. The questions asked are: how long did it take for the first stone to reach the ground, how high is the building, and what are the speeds of the two stones before they hit the ground. No specific equations or solutions are provided.
  • #1
atbruick
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Homework Statement


A stone is dropped from the roof of a building; 1.90 s after that, a second stone is thrown straight down with an initial speed of 29.0 m/s, and the two stones land at the same time.
a. How long did it take the first stone to reach the ground?

b. How high is the building?

c. What are the speeds of the two stones just before they hit the ground?


Homework Equations





The Attempt at a Solution

 
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To save time, and to be polite, Physics Forums should define something like: "Standard Response 001" being something like "Welcome to PF. Please observe the PF rules for posting, then we'd be happy to help."
 

FAQ: Stones being dropped and thrown from building

1. How does the height of a building affect the distance a stone can be dropped or thrown from it?

The height of a building does not have a direct effect on the distance a stone can be dropped or thrown from it. The distance will primarily depend on the initial velocity and angle at which the stone is thrown, as well as the force of gravity acting on it. However, a taller building may provide a higher initial starting point, allowing for a longer distance if thrown at the same angle and velocity as a shorter building.

2. What factors influence the trajectory of a stone when dropped or thrown from a building?

The trajectory of a stone when dropped or thrown from a building is influenced by several factors, including the initial velocity and angle at which it is thrown, the force of gravity, air resistance, and wind speed and direction. These factors can all affect the path of the stone and determine how far it will travel and where it will land.

3. Can the shape or weight of a stone affect its distance when dropped or thrown from a building?

The shape and weight of a stone can have a significant impact on its distance when dropped or thrown from a building. A heavier stone will have more gravitational force acting on it, causing it to drop faster and potentially travel a shorter distance. The shape of the stone can also affect its aerodynamics, potentially causing it to travel a shorter or longer distance depending on its design.

4. Is there a maximum distance a stone can be dropped or thrown from a building?

There is no specific maximum distance that a stone can be dropped or thrown from a building. The distance will depend on various factors, such as the initial velocity and angle, as well as external factors like air resistance and wind speed. In theory, a stone could be thrown an infinite distance if all of these factors were perfectly aligned.

5. What safety precautions should be taken when dropping or throwing stones from a building?

When dropping or throwing stones from a building, it is important to take safety precautions to prevent harm to people or property. This may include warning others in the area, using protective gear, and ensuring the area below is clear of people or objects. It is also important to consider the potential rebound or ricochet of the stone and take necessary precautions to prevent injury or damage.

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