Question

a stone is dropped form height of 100m how long does it ttake to fall
a) the first 50 m
B) the second 50 m

Answer 1

ans is same
s=ut+1/2(at²)
=(0)(x)+1/2(10)(x²)
100=5x²
20=x²
a)
$\sqrt{20 \ } \div 2$
b
$\sqrt{20} \div 2$