So I am trying to remember my childhood doing some Physics problems, but seems that I forgot almost everything. But it's not a big thing... that's why I'm training!
My problem is pretty basic although I remember just a little... let me ennounce it:
A 5 kg block of ice falls away from the edge of the roof of a block of flats, at a height of 26 m above the ground. Ignoring air drag, find out:
a) how long it takes for the ice block to hit the ground. b) what is the speed at which the ice block hits the ground. c) how much energy it transfers to the surroundings when it comes to a stop and break into pieces. (g = 9.8 m/s^2)
For a), I tried: t = d/r, and gives me 2.653 secs.
For b), I tried: 9.8 * 2.653, and this results in 25.9994 m/s
For c) I tried nothing since I don't remember what should I do.
Can someone take a look at this problem and tell me if I am doing it right, or just messing all the things?