A stuntman jumps from the roof of a building to the safety net below. How far has the stuntman fallen after 2 seconds?

1 Answer
Apr 16, 2018

20 metres

Explanation:

Here we can apply the equation of motion

" "s=ut+1/2at^2

The stuntman (hopefully :p) falls with initial velocity u=0. The displacement( not distance) is s and time is t=2 s. The acceleration a here is nothing but g=10 ms^-2

" "s=1/2*10*2^2

" "s=20 metres.