1-Fat Albert is standing by the classroom door at 11:40. Only 0.30 s after the bell rings he is running at 4.0m/s towards the cafeteria.
a) What was his average acceleration during this time?
b)How far did he move during this time?
First of all, how can we get acceleration if we are dealing with scalar values? and for this part of the question "only 0.30s after the bell" do we assume he was still for the beginning of those .30 s? My answer would be a=0 because he would be running at a constant speed of 4.0m/s . Am I right?
For part b) how can we calculate this without the total time it took him to reach the cafeteria?!
Any help is appreciated ! Thank you in advance!