# Find the difference of heights of the objects

• annalian
In summary, the problem appears to be incorrect due to conflicting information. It states that two particles are thrown horizontally from different heights at equal initial speeds, but then says they land at the same time. This is not possible without changing the acceleration of one of the objects.
annalian

## Homework Statement

Two particles are thrown horizontally from different heights with equal initial speeds. Find the difference of heights h1-h2 if the object fall to the ground at the same time.

h=voyt+gt^2/2

## The Attempt at a Solution

As voy=vox=0, t1=t2, the difference of heights is 0. Am i right?
Image http://oi64.tinypic.com/2cpqr6a.jpg

Last edited:
annalian said:
As voy=vox=0, t1=t2, the difference of heights is 0. Am i right?
How can the difference in heights be 0 if the problem statement says that they are thrown "from different heights".

Is there a figure with this problem, or is there any additional information? How can two particles be thrown horizontally from different heights at the same speed and land on the ground at the same time? Are they thrown at different times? There seems to be missing information in this problem.

TomHart said:
How can the difference in heights be 0 if the problem statement says that they are thrown "from different heights".

Is there a figure with this problem, or is there any additional information? How can two particles be thrown horizontally from different heights at the same speed and land on the ground at the same time? Are they thrown at different times? There seems to be missing information in this problem.
I added the image http://oi64.tinypic.com/2cpqr6a.jpg from the book

I can see that the objects are thrown from different heights and they land at the same height, but sorry, the picture does not make sense - that is, if the other information given in the problem (thrown horizontally at same initial speed) is correct. If the other information given in the problem is correct, the accelerations have to be different in order for the two objects to land at the same location and same time.

TomHart said:
I can see that the objects are thrown from different heights and they land at the same height, but sorry, the picture does not make sense - that is, if the other information given in the problem (thrown horizontally at same initial speed) is correct. If the other information given in the problem is correct, the accelerations have to be different in order for the two objects to land at the same location and same time.
So you think the problem is wrong?

Yes.

## 1. What does "find the difference of heights of the objects" mean?

The phrase "find the difference of heights of the objects" typically refers to calculating the vertical distance between two objects or points. This can be done by subtracting the height of one object from the height of the other.

## 2. How do you measure the height of an object?

The height of an object can be measured using various methods, such as using a measuring tape, ruler, or laser measurer. The most accurate way to measure height is by using a laser measurer, which uses a laser beam to determine the precise distance between two points.

## 3. Why is it important to find the difference of heights of objects?

Finding the difference of heights of objects is important in various fields, such as engineering, construction, and architecture. It allows for accurate measurements and calculations, which are crucial in creating stable and safe structures.

## 4. How do you factor in the curvature of the Earth when finding the difference of heights?

When calculating the difference of heights over long distances, the curvature of the Earth must be taken into account. This can be done by using specialized tools and formulas, such as the Pythagorean theorem or the spherical trigonometry formula.

## 5. Are there any limitations to finding the difference of heights of objects?

Yes, there are some limitations to finding the difference of heights of objects. For example, it may be difficult to measure the height of an object that is constantly moving or located in an inaccessible area. Additionally, weather conditions can affect the accuracy of measurements, especially when using laser measuring tools.

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