a stone is thrown vertically downward from the top of 40 m tall building with an initial speed of 1 after 2s the stone will have traveled a distance of?
2. Relevant equations
3. The attempt at a solution
the answer i was given is 22
and i tried to put 9.8 without negative and it was 21.6 is this one right ??
why is the acceleration positive while going up is negative ???
waiting and thank you