Acceleration Equation 𝑥=((𝑣𝑖+𝑣𝑓)/2)𝑡

Learn when to pick and how to rearrange for the different variable in 𝑥=((𝑣𝑖+𝑣𝑓)/2)𝑡. Also see it in use in the problem: A race car accelerates from 16.5 m/s to 38.1 m/s in 2.47 seconds. How far did the car travel in 2.47 seconds?

[Maluizafernandes]

Genial, muito obrigada por clarear minha mente!

[jamesholden]

You have to calculate the average velocity and multiply it by time. Average velocity when constantly accelerating is (vi+vf)/2. Let’s say you started a 2 m/s and constantly accelerated to 8 m/s. Your average is (8+2)/2 or 5 m/s. Many other equations have vf-vi because they are using the difference in velocity

[dorassi]

Teacher, so why did you use the equation with vi+vf/2 *t NOT vf-vi/2*t

[dorassi]

Please Teacher answer me AS SOON AS POSSIBLE 💐 thank you