When a cyclist squeezes her brake lever, she can stop wlth an acceleration of #3.0# #m##/##s^2# . How far will her bike travel while coming to a complete step if her initial speed was #11# #m##/##s#?

1 Answer
Dec 3, 2015

Answer:

I found: #20.2m#

Explanation:

Here you can use the relationship from kinematics:
#v_f^2=v_i^2+2ad#
Where #f and i# refer to the initial and final positions:
with your data and taking "d" as the distance up to #v_f=0# you get:
#0=11^2-2(3)d#
(negative acceleration)
#d=121/6=20.2m#