An object is released from a height of 25M. How far has the object travelled during the 3rd second of fall?
I don't really know how to do this - what formula/'s should I use?
it only takes a bit over 2.2 seconds to hit the ground from a height of 25 m, so asking how far it travels in the third second is poorly posed.
if it had enough height to fall the "third" second, then from t = 2 to t = 3 seconds ...
if the intent was to determine the distance it fell from t = 2 seconds until it hits the ground, ...
leaving 5.4 m to fall from t = 2 to impact.