Hi Miko,
the time of fall is independent of the mass of the object falling. In other words the 50kg object and the 100 kg object would fall in the same amount of time.
$\displaystyle a(t)=9.8$
$\displaystyle v(t)=9.8t$
$\displaystyle x(t)=\frac{9.8t^2}{2}+100$.
Solve for t in the equation $\displaystyle x(t)=0$. This is the time any object would take to fall 100 m if they start to fall from 100 m above the ground and if they start with a speed of 0m/s.
__________________ **Isaac** If the problem is too hard just let the Universe solve it. |