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
crayon
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.

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