Math Problem Statement

The formula v equals StartRoot 2 gh EndRoot gives the velocity​ v, in feet per​ second, of an object when it falls h feet accelerated by gravity​ g, in feet per second squared. If g is approximately 32 feet per second​ squared, find how far an object has fallen if its velocity is 224 feet per second.

Solution

To find the distance hh an object has fallen when its velocity vv is 224 feet per second, we can use the formula:

v=2ghv = \sqrt{2gh}

Given:

  • v=224v = 224 ft/s
  • g=32g = 32 ft/s²

First, we square both sides of the equation to eliminate the square root:

v2=2ghv^2 = 2gh

Substituting the known values:

(224)2=2×32×h(224)^2 = 2 \times 32 \times h

Calculating 2242224^2:

2242=50176224^2 = 50176

Now, substituting this into the equation:

50176=64h50176 = 64h

Next, we solve for hh:

h=5017664h = \frac{50176}{64}

Calculating hh:

h=784 feeth = 784 \text{ feet}

Thus, the object has fallen 784 feet.

Would you like any further details or explanations? Here are some related questions you might consider:

  1. How does changing the value of gg affect the height?
  2. What would the velocity be if the object fell from 1000 feet?
  3. How does this formula apply to different planets with varying gravity?
  4. What are the implications of air resistance on falling objects?
  5. Can this formula be used for objects thrown downward?

Tip: Always check the units when working with formulas to ensure consistency and accuracy.

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Math Problem Analysis

Mathematical Concepts

Physics
Algebra

Formulas

v = sqrt(2gh)
v^2 = 2gh

Theorems

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Suitable Grade Level

Grades 9-12