Question

A body lets fall from the top of the building reaches the ground in 3 seconds the height of the building is

Answer 1

Answer:

44.1m

Explanation:

gravitational force of earth is 9.807 m/s²

formula is s=ut+1/2at2

where s= height of the building

t= time taken

u= initial value I.e. 0

substitute the values

s=(0*3)+(1/2*9.8*3^2)

s=(1/2*9.8*3^2)

s=44.1m