An apple is 4.50 m above the ground when it breaks off the tree branch and begins to fall. How long is it in free fall?

1 Answer
Dec 31, 2015

The time elapsed is 0.92s

Explanation:

Consider the equation of free fall s=vt+1/2at^2 at t=0 v=0.
So s=1/2at^2 t=sqrt(2s/a)=sqrt((2*4.5)/(9.81))=0.92s