Falling Ball Physics: Solve For Height, Time, And Distance

by Mireille Lambert 59 views

Hey guys! Let's dive into a super interesting physics problem involving a falling ball. We're given some data: 50 meters and 48 seconds. It seems like we're going to explore the motion of an object under the influence of gravity. This is a classic scenario in physics, and it's packed with cool concepts like potential and kinetic energy, acceleration due to gravity, and the relationship between distance, time, and velocity. Get ready to put on your thinking caps and unravel this mystery!

Unpacking the Problem

Before we jump into calculations, let's break down the problem. We have a ball being dropped (or maybe thrown?) from a certain height. We're given some initial information: a distance of 50 meters and a time of 48 seconds. However, it's not immediately clear what these values represent in the context of the falling ball. Are these the total height and total time? We'll need to carefully analyze the questions to figure it out.

The questions themselves are our roadmap. We need to find:

  • The initial height of the window: This is our starting point. We need to determine the height from which the ball was released. This will likely involve understanding the initial conditions of the problem.
  • The time it takes to pass a window 10 meters lower: This involves calculating the time taken to cover a specific distance during the fall. We'll need to consider the acceleration due to gravity.
  • The total time to reach the ground: This is about finding the total time of flight, considering the initial height and the constant acceleration.
  • Additional meters traveled in the final second: This is an interesting question that focuses on the changing velocity of the ball as it falls. Since the ball accelerates, it will cover more distance in the final second compared to earlier seconds.

To solve these, we'll likely use the equations of motion, which describe the relationship between displacement, initial velocity, final velocity, acceleration, and time. These equations are the tools we need to unlock the secrets of this falling ball!

Cracking the Code: Equations of Motion

Okay, let's talk about the heroes of our story: the equations of motion! These equations are the foundation for solving problems involving constant acceleration, like our falling ball scenario. There are three primary equations we'll likely use:

  1. d = v₀t + (1/2)at² (Displacement equals initial velocity times time plus one-half times acceleration times time squared)
  2. v = vâ‚€ + at (Final velocity equals initial velocity plus acceleration times time)
  3. v² = v₀² + 2ad (Final velocity squared equals initial velocity squared plus two times acceleration times displacement)

Where:

  • d = displacement (the change in position)
  • vâ‚€ = initial velocity
  • v = final velocity
  • a = acceleration (in this case, the acceleration due to gravity, approximately 9.8 m/s²)
  • t = time

These equations are powerful because they allow us to relate different aspects of the motion. For example, if we know the initial velocity, acceleration, and time, we can calculate the displacement. Or, if we know the initial and final velocities and the acceleration, we can find the displacement. It's like having a set of keys that unlock different pieces of the puzzle.

Remember, guys, a crucial assumption we're making here is that air resistance is negligible. In the real world, air resistance plays a significant role, especially for objects falling over long distances. However, for simpler physics problems like this, we often ignore air resistance to make the calculations easier. It simplifies the problem, allowing us to focus on the fundamental principles of motion.

Now, let's see how we can apply these equations to answer our specific questions.

Solving for the Initial Height

Alright, let's tackle the first question: What is the height of the window from which the ball was dropped? This is our starting point, and figuring this out will help us with the rest of the problem.

We need to carefully consider what information we have and how it relates to the equations of motion. The problem states "50 48 Aturo (metros) Tiempo (segundos)". It seems a bit cryptic, but we can interpret it as the ball falls 50 meters in 48 seconds. We are missing the units, but it can be safely inferred that 50 is in meters and 48 is in seconds. This is our key piece of information.

Let's list down what we know:

  • Displacement (d) = 50 meters
  • Time (t) = 48 seconds
  • Acceleration (a) = 9.8 m/s² (acceleration due to gravity)
  • Initial velocity (vâ‚€) = 0 m/s (since the ball is dropped, not thrown)

We're trying to find the initial height, which is the same as the total displacement in this case. We can use the first equation of motion:

  • d = vâ‚€t + (1/2)at²

Plugging in the values:

  • 50 = (0)(48) + (1/2)(9.8)t²
  • 50 = 0 + 4.9t²
  • 50 = 4.9t²

Whoops! Something seems off here. If we solve for t, we get:

  • t² = 50 / 4.9
  • t² ≈ 10.2
  • t ≈ √10.2 ≈ 3.19 seconds

This result (3.19 seconds) is significantly different from the given time of 48 seconds. This indicates that the 50 meters and 48 seconds do not represent the total distance fallen and total time. Instead, they likely represent a specific portion of the fall.

Let's rethink our approach. Since we don't know the total height, let's call it 'H'. We need to find a way to relate the 50 meters and 48 seconds to this unknown height. This requires a bit of algebraic manipulation and a deeper understanding of the problem's setup.

We can set up two scenarios:

  1. The entire fall: The ball falls a distance 'H' in time 'T' (which we don't know yet).
  2. The partial fall: The ball falls 50 meters in 48 seconds.

We can write the equation of motion for both scenarios:

  1. H = (1/2)gT² (since v₀ = 0)
  2. 50 = (1/2)g(48)²

Now, we can solve the second equation for 'g', but there's something else wrong here. The second equation suggests that the acceleration due to gravity varies. This isn't right, as 'g' should be constant. Let's backtrack and re-examine the given information. It seems there might be an error or missing information in the problem statement. The values provided don't lead to a consistent physical scenario.

Given the inconsistencies, we'll proceed by assuming that the 50 meters represents the total height from which the ball was dropped. This allows us to continue solving the remaining parts of the problem, even if it means we're working with a modified scenario.

With this assumption, the initial height of the window is 50 meters. This was quite a journey, guys! We learned the importance of carefully analyzing the problem and identifying inconsistencies. Even in physics, sometimes the given information isn't perfect, and we need to make educated assumptions to move forward.

Time to Pass a Window 10 Meters Lower

Now, let's move on to the second question: In what time did the ball pass a window that is 10 meters lower? This question builds upon our (assumed) initial height of 50 meters. If a window is 10 meters lower, it means it's located at a height of 50 - 10 = 40 meters from the ground.

To solve this, we need to find the time it takes for the ball to fall 10 meters (from 50 meters to 40 meters). We can use the same equation of motion we used before:

  • d = vâ‚€t + (1/2)at²

This time, we know:

  • Displacement (d) = 10 meters
  • Initial velocity (vâ‚€) = 0 m/s
  • Acceleration (a) = 9.8 m/s²

Plugging in the values:

  • 10 = (0)t + (1/2)(9.8)t²
  • 10 = 4.9t²
  • t² = 10 / 4.9
  • t² ≈ 2.04
  • t ≈ √2.04 ≈ 1.43 seconds

So, the ball takes approximately 1.43 seconds to pass the window that is 10 meters lower. This makes sense – it's a relatively short amount of time, as the ball is accelerating due to gravity. We're on a roll, guys!

Total Time to Reach the Ground

Next up, we need to figure out how long it takes the ball to reach the ground. This is a classic problem that allows us to use the equations of motion in a straightforward way. We already know (or have assumed) the total height (50 meters) and the acceleration due to gravity (9.8 m/s²). We also know the initial velocity is 0 m/s.

We can use the same equation of motion again:

  • d = vâ‚€t + (1/2)at²

This time, we know:

  • Displacement (d) = 50 meters
  • Initial velocity (vâ‚€) = 0 m/s
  • Acceleration (a) = 9.8 m/s²

Plugging in the values:

  • 50 = (0)t + (1/2)(9.8)t²
  • 50 = 4.9t²
  • t² = 50 / 4.9
  • t² ≈ 10.2
  • t ≈ √10.2 ≈ 3.19 seconds

Therefore, the ball takes approximately 3.19 seconds to reach the ground. This result feels consistent with the previous calculation. It's longer than the time it took to fall the first 10 meters, which makes sense because the ball's velocity is increasing as it falls.

Distance Traveled in the Final Second

Okay, this is where things get interesting! The final question asks: How many additional meters did the ball travel in the last second before hitting the ground? This is a great question that highlights the concept of non-uniform motion. Since the ball is accelerating, it covers more distance in each subsequent second.

To solve this, we need to figure out the ball's position one second before it hits the ground. We already know it takes 3.19 seconds to reach the ground, so we need to find its position at 3.19 - 1 = 2.19 seconds.

Let's use the equation of motion to find the distance fallen in 2.19 seconds:

  • d = vâ‚€t + (1/2)at²

Where:

  • vâ‚€ = 0 m/s
  • a = 9.8 m/s²
  • t = 2.19 seconds

Plugging in the values:

  • d = (0)(2.19) + (1/2)(9.8)(2.19)²
  • d ≈ 0 + 4.9 * 4.7961
  • d ≈ 23.5 meters

So, at 2.19 seconds, the ball has fallen approximately 23.5 meters. This means it's at a height of 50 - 23.5 = 26.5 meters above the ground.

Now, we know the ball falls from 26.5 meters to 0 meters in the last second. Therefore, the distance traveled in the final second is:

  • 50 meters (total height) - 23.5 meters (height after 2.19 seconds) = 26.5 meters

Alternatively, we could find the position at 3.19 seconds (which we know is 50 meters), and subtract the position at 2.19 seconds (23.5 meters) to get the distance traveled in that final second. The result is the same: approximately 26.5 meters. This shows how the ball covers a significant distance in the final second due to its increasing velocity. It's a testament to the power of acceleration!

Wrapping Up the Falling Ball Adventure

Wow, guys! We've successfully navigated the world of falling balls and the equations of motion. We started with a somewhat ambiguous problem statement and, through careful analysis and a bit of educated guessing, we were able to answer all the questions. We determined the initial height (assuming 50 meters), calculated the time to pass a lower window, found the total time to reach the ground, and even figured out the distance traveled in the final second.

This problem highlighted several key concepts in physics:

  • Equations of motion: These are our fundamental tools for solving problems involving constant acceleration.
  • Acceleration due to gravity: This constant force is what drives the motion of the falling ball.
  • Initial conditions: The initial velocity and position of the object are crucial for determining its future motion.
  • Non-uniform motion: The ball's velocity changes over time, leading to varying distances covered in equal time intervals.
  • Problem-solving strategies: We learned the importance of carefully analyzing the problem, identifying inconsistencies, and making reasonable assumptions when necessary.

Physics is all about understanding the world around us, and this falling ball problem is a perfect example of how we can use mathematical tools and logical reasoning to unravel the mysteries of motion. Keep exploring, keep questioning, and keep learning, guys!