Hi,
Formula for distance is:
d = v·t, where v is the velocity (a constant value, measured in m/s), and t is time of movement, measured in s, seconds.
1 km = 1000 m, and 1 h = 3600 seconds, therefore:
v = 120 km/h = 120 000 / 3600 m/s = 33.33 m/s, so v = 33,33 m/s.
t = 24 seconds.
d = v·t = 33,33 m/s · 24 s = 100·24/3 = 800 m.
So, building is 800 meters long.
Have you understood the solution ?
Green eyes.
