A roof tile falls from rest from the top of a building. An observer inside the building notices that it takes 0.10 s for the tile to pass her window, which has a height of 1.18 m. How far above the top of this window is the roof?

Answer 1

Assuming the 'passing the window'part
means 0.10s to go from the top to the bottom of the window...

Then the veocity will be 1.18/0.1, so 11.8m/s. Accel will be that of 'g', so 9.8 m/s^2; and the initial velocity was 0 m/s.

Use v^2=u^2+2as

Solve for s, which will be the height it has fallen.

Answer 2

what does "u" stand for?

Answer 3

In a scene in an action movie, a stuntman jumps from the topof one building to the top of another building 4.0m away. After arunning start, he leaps at a velocity of 5.0m/s at an angle of 15degrees with respect to the flat roof. Will he make it to the otherroof, which is 2.5m shorter than the building he jumps from?