Answered

A ball is dropped from the rooftop of a building 80.0 m high. How many seconds does the ball take to reach the ground?

Sagot :

Rhyckayenviz
t=?
d=80 m
g=9.8 m/s∧2
equation: "t=√(2d/g)"
t= √[(2*80)/9.8] 
t=√(160/9.80)
t=√16.32653061
t=4.040610178 seconds~~~~4 seconds