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May29-10, 11:09 AM
P: 159
Hi all

who I can find the displacement in this Q ?

A jetliner lands with a speed of 90 m/s on runway . It runs with constant speed for 2 s , before the brakes are applied . The brakes produce a deceleration of 20 m/s2 . What is its displacement on the runway .

I try to solve

V0 = 90 m/s

t1 = 2s

x = V0 X t1 = 180 m

a = -20 m/s2

then I don't know who I complte it ?
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