Calculation of the Average Acceleration of a Movable

The change in the speed of a rover depends on a quantity called acceleration.
To calculate the acceleration of a mobile we must apply the following mathematical expression:

Where:
∆V = speed variation, final speed minus initial speed.
vi = initial speed
Vf = final velocity
∆V = Vf - Vi
∆t = time variation, end time minus start time.
∆t = tf - ti
ti = start time
tf = end time

Example 1
When hunting, a cheetah - starting from rest - reaches a speed of 72 km/h in 2 seconds. What is your acceleration in that time frame?


As it starts from rest, we have:
Vi = 0 Km/h
Vf = 72 km/h = 20 m/s
ti = 0 s
tf =2 s
a = 20/2
a = 10 m/s2
Example2
An airplane starts from rest and, with constant acceleration, reaches a speed of 450 km/h in 25 seconds (s). What is the plane's acceleration?
Vi = 0 Km/h
Vf = 450 km/h = 125 m/s
ti = 0 s
tf =25 s
a = 125 / 25
a = 5 m/s2
Example 3
During a stretch of the race, a Formula 1 car increases its speed from 100 km/h to 260 km/h, doing this in 4 seconds. What is your average acceleration on this stretch?


Vi = 100 Km/h = 27.8 m/s
Vf = 260 km/h = 72.2 m/s
ti = 0 s
tf = 4 s
a = (72.2 - 27.8) / (4 - 0)
a = 44.4 / 4
a = 11.11 m/s2

by Mark Noah
Graduated in Mathematics

Source: Brazil School - https://brasilescola.uol.com.br/matematica/calculo-aceleracao-media-um-movel.htm

Pharmacist Details Body Effects One Hour After Drinking Diet Coke

For a long time it was conveyed, probably misleadingly, that the famous diet sodas were “better” ...

read more

Learn how to make sweet popcorn with nest milk

Sweet or savory popcorn is a simple and tasty snack that kids love. In addition, it is very versa...

read more

Check the new rules for inclusion assistance

On August 11, the Ministry of Labor published an ordinance with new rules for assistance-inclusio...

read more