Math Problem Statement

C. What is the object's maximum acceleration? Explain how you found this.

Solution

To determine the object's maximum acceleration from the graph, we need to analyze the slope of the velocity-time graph because acceleration is the rate of change of velocity with respect to time. The steeper the slope, the greater the acceleration.

Steps to Find Maximum Acceleration:

  1. Identify the sections of the graph:

    • The graph has three distinct linear segments:
      • Segment 1: From t=0t = 0 to t=2t = 2 seconds, the velocity increases.
      • Segment 2: From t=2t = 2 to t=4t = 4 seconds, the velocity is constant.
      • Segment 3: From t=4t = 4 to t=6t = 6 seconds, the velocity decreases.
  2. Calculate the slope of each segment:

    • Segment 1 (0 to 2 seconds):
      • Initial velocity (v1v_1) = 0 m/s
      • Final velocity (v2v_2) = 4 m/s
      • Time interval (Δt\Delta t) = 2 s
      • Acceleration a1a_1 = v2v1Δt=402=2\frac{v_2 - v_1}{\Delta t} = \frac{4 - 0}{2} = 2 m/s²
    • Segment 2 (2 to 4 seconds):
      • The velocity is constant (no change), so acceleration a2=0a_2 = 0 m/s².
    • Segment 3 (4 to 6 seconds):
      • Initial velocity (v3v_3) = 4 m/s
      • Final velocity (v4v_4) = -2 m/s
      • Time interval (Δt\Delta t) = 2 s
      • Acceleration a3a_3 = v4v3Δt=242=3\frac{v_4 - v_3}{\Delta t} = \frac{-2 - 4}{2} = -3 m/s²

Conclusion:

  • The maximum acceleration in magnitude occurs in Segment 3 and is 3-3 m/s². Although it's negative (indicating deceleration), the magnitude a3=3|a_3| = 3 m/s² is the largest.

Would you like more details on any part of this process? Here are some related questions:

  1. What does the negative acceleration in Segment 3 indicate about the object's motion?
  2. How does constant velocity in Segment 2 affect the object's acceleration?
  3. What is the significance of the slope in a velocity-time graph?
  4. How would the graph look if the object had constant acceleration?
  5. Can you determine the total displacement of the object using this graph?

Tip: Remember that the steeper the slope in a velocity-time graph, the greater the acceleration (positive or negative).

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Math Problem Analysis

Mathematical Concepts

Kinematics
Acceleration
Velocity-Time Graphs

Formulas

Acceleration formula: \( a = \frac{\Delta v}{\Delta t} \)

Theorems

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Suitable Grade Level

High School