hey everyone, i am new here and just a beginner in physics. i am in love with physics although i get stuck at some of the most SIMPLEST things, i think that i over evaluate it too much. I just seriously begun to understand physics.Here is the question : A car starts from rest and accelerates at a constant rate. After traveling a distance of 200m, the speed of the car is 80 km/h. What was the acceleration of the car?
a= (vf-vi)/ t....i think so
The Attempt at a Solution
i dont know what to do. i am thinking that since acceleration is depending on the time taken, i would convert the 200m and the 80 km/h into the same unit and divide them to get the time taken for it to reach the 80 km/h speed.
after that, i would use that time and the equation above to find the acceleration. i tried and tried and the back of my book says the answer is 1.2 meters per second to fit with the data as the answer to 2 significant figures. i tried over and over and still cant find a method to get it to that answer.
please help and please explain the steps and solutions step by step so that i can fully understand this problem and answer. thank you all i just really started getting into physics and i want to become a physicist but i know that i have a long way to go but i am not going to give up!!