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Introduction

When a body changes its velocity, it's labeled as acceleration. Acceleration measures the rate of which the velocity changes.

Formula

Equation

a=(v-u)/t

Variables

  • a=acceleration (m/s^2)
  • v=final velocity (m/s)
  • u=initial velocity (m/s)
  • t=total elapsed time of change (s)

Derivations

∆n=v-u

a=∆n/t

a=(v-u)/t

Explanation

A rate represents the change in something over a period of time. Acceleration is the change in velocity over a period of time. The difference in the initial velocity and the final velocity represents the change in velocity. The change in velocity over the time equals acceleration.

Examples

1

A car starts from rest and ends at a velocity of 20 m/s, spanning over a period of 4 seconds. What is the car's acceleration?

If the car is at rest, the initial velocity is 0.

(20-0)/4

5.0 m/s^2

2

Notes/Trivia

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