How long does it take an object to fall 10m, 100m, 1000m?

Can anyone tell me what I need to do to calculate this problem? I'm pretty sure I need to use d=1/2 ag t^2, but I don't know where to plug things in.





Any help is appreciated.





Thanks in advance!How long does it take an object to fall 10m, 100m, 1000m?
To solve for the time.





you have to use this equation :





d = Vi*t + 1/2 a t^2





Becuase you are dropping the object, you have the right equation.





Therefore you plug in the values





d = 10, 100 , 1000





a = 9.8 m/s





Then you solve for time.