d = (1/2) g t^2
how long to fall 90 cm = .9 m
.9 = (1/2)(9.81) t^2
how long to fall 40 cm = .4 m
.4 = (1/2)(9.81) t^2
subtract
A window is 50 long. A stone is falling from a height of 40 cm above the window.find the time taken by the stone to cross the window.
2 answers
3upon7
1 answer