Question

A car accelerates from rest at 6.6 m/s 2 . How much time does it need to attain a speed of 5 m/s?

Answer 1

WEll, you do not have constant acceleration so that means than Kinematic equations are out, correct? Thus, you should attempt to look at the equations you have for acceleration that is not constant: \[a = \Delta v/ \Delta t\] When studying write down all the equations on a piece of paper, like a cheat sheet, then write very short blurbs next to them about them. For example: these equations are only used for acceleration or these equations are used when acceleration is not constant. This process will not only allow you to work through your homework problems at a faster rate but it will help you remember them as well as how and when to use them.