How to Calculate Deceleration: Step-by-Step Formula and Example

Learn how to solve for deceleration with the simple formula using initial and final velocity over time. Includes clear example calculations.

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To solve for deceleration, use the formula: Deceleration = (Final Velocity - Initial Velocity) / Time. This is the same as finding acceleration but with a negative result since the velocity is decreasing. Make sure to use consistent units for velocity and time. For example, if a car slows from 60 m/s to 20 m/s in 5 seconds, the deceleration is (20 - 60) / 5 = -8 m/s².

FAQs & Answers

  1. What is the formula for deceleration? Deceleration is calculated using the formula: (Final Velocity - Initial Velocity) divided by Time.
  2. How is deceleration different from acceleration? Deceleration is negative acceleration, meaning a decrease in velocity over time, whereas acceleration is an increase in velocity.
  3. What units are used when calculating deceleration? Deceleration is usually expressed in meters per second squared (m/s²), with velocity in meters per second (m/s) and time in seconds.
  4. Can deceleration be calculated if time interval is zero? No, because division by zero is undefined; time must be a non-zero value to compute deceleration.

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