Average acceleration of a car changing speed and direction

Thread starter danielsmith123123
Start date Jul 6, 2021
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Acceleration Average Average acceleration Car Direction Speed

Jul 6, 2021

danielsmith123123

Homework Statement: A car, travelling initially at 28 m/s [W25 ̊N], takes 8 s to change its velocity to 25 m/s [S]. What is the average acceleration over this time interval?

Relevant Equations: a = vf-vi / t

Nevermind I found what I had to do, thank you though.

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Jul 6, 2021

Delta2

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You basically have to do one vector subtraction (subtract the 2 given vectors of velocity and keep the result as vector) and then 1 division by 8sec.

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