Can somebody explain to me how to get the acceleration in the second and third interval please.(adsbygoogle = window.adsbygoogle || []).push({});

A car starts from rest and accelerates uniformly for 10.0s, reaching a speed of 20.0m/s. It then continues traveling at that speed for 40.0 additional seconds before decelerating uniformly and coming to rest after another 25.0 seconds. Calculate the acceleration on the car during each of the three intervals and the distance traveled during each of the three intervals and the distance traveled during each time.

If acceleration formula is vf-vinitial/t. Im not sure but i think the v initial for the second interval is 20.0m/s and vf is 0 and time is 40.0 s. Can somebody tell me if I am wrong or right

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# How to get the acceleration in the second and third interval please

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