Question

A stone is drop from edge of a roof a) How long does it take to fall 4.9m ? b) How fast does it move at the end of fall ? c) what will be it's acceleration after 3 sec ? . ❤❤I'll mark the correct anwser as brainliest❤❤ _____love uhh________

Answer 1

since it is just dropped from room so its initial velocity will be 0 and acceleration will be g

so, h=ut + 1/2gt^2

4.9=1/2*9.8*t^2

t^2=1

t=1 sec

So, the stone will take 1 sec to fall in 4.9m