Question

A poorly tuned VW can accelerate from rest to speed of 28 m/s in 20 seconds. What is the average acceleration?

Answer 1

please, by definition, you have to apply this formula, in order to find the average acceleration a:
\[a=\frac{ \Delta v }{ \Delta t }\]

Answer 2

where Delta_v is equals to the speed variation, and Delta_t is the time interval i which Delta_v is ooccurred

Answer 3

please try to substitute your numerical data into the formula above!

Answer 4

U still need help @hl147 :)

Answer 5

K so it started from rest which means 0m/s and reach at speed of 28m/20s
Av= final speed/ initial speed/ final time-initial time
Av= 28-0/ 20-0
Av= 28/20
Av= 1.4m/s
Make sense? :)

Answer 6

@Godlovesme that's right! even if the unit of measure is m/sec^2, not m/sec

Answer 7

Yea my fault got it @hl147

Answer 8

yes thank you! @Godlovesme

Answer 9

Anytime :)

Answer 10

Thanks for the medal! :)

Answer 11

Your welcome!!