Question

An object travels horizontally at 15.00 meters per second off a cliff that is 12.00 meters tall. How far from the base of the cliff does the object land?

Answer 1

how long does it take to fall 12m?
Multiply that by 15

Answer 2

h= gt²/2,
t=2h/g=2•12/9.8=2.45 s
s=v•t = 15•t=15•2.45 = 36.7 m