College Physics I – Introduction

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Deceleration

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College Physics I – Introduction

Definition

Deceleration is the rate at which an object slows down. It is a negative acceleration indicating a decrease in velocity over time.

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5 Must Know Facts For Your Next Test

  1. Deceleration has the same units as acceleration, typically meters per second squared ($m/s^2$).
  2. It can be calculated using the formula $a = \frac{\Delta v}{\Delta t}$, where $a$ is the deceleration, $\Delta v$ is the change in velocity, and $\Delta t$ is the change in time.
  3. In kinematic equations, deceleration is represented as a negative value of acceleration.
  4. An object undergoing deceleration will have its final velocity smaller than its initial velocity if the motion occurs in a straight line.
  5. Deceleration can occur due to various forces such as friction, air resistance, or applied brakes.

Review Questions

  • What are the units used to measure deceleration?
  • How do you calculate deceleration using changes in velocity and time?
  • If an object undergoes deceleration, how does its final velocity compare to its initial velocity?
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