If an object is dropped from the top of a building and it reaches the ground at t = 4s, then the height of the building is (ignoring air resistance)(g=9.8ms^(-2))

If an object is dropped from the top of a building and it reaches the

1.	If an object is dropped from the top of a building and it reaches the ground at t = 4s, then the height of the building is (ignoring air resistance)(g=9.8ms^(-2))
Answer» 77.3m 78. 4M 80.5 m 79.2m Answer :D