Answered

A ball is dropped from a height of 100 meters. How long does it take for the ball to hit the ground?

Sagot :

given: d=100m g=9.8m/s² Vi=0 
unknown; Vf=? t=?                           
formula: Vf²=Vi²+2gd                            t=vf-vi/g
solution:Vf²=0²+2×9.8m/s²×100m          t=44.27m/s - 0m/s/9.8m/s²
            √Vf²=√1960 m²/s²                 
answer; Vf=44.27m/s                           t=4.52s           

sorry hanggan dyan lng alm ko ei. pagpasensyahan mo nah