The distance moved by the vehicle on after brakes is 18.91 m.
<h3>What is speed?</h3>
The speed of any moving object is the ratio of the distance covered and the time taken to cover that distance.
Speed s = distance d / time t
You are driving through town at 11.0 m/s when suddenly a ball rolls out in front of you. You apply the brakes and begin decelerating at 3.2 m/s.
The final velocity will be zero, when brakes are applied.
Using the third equation of motion,
v² -u² =2as
0² - 11² = 2x (-3.2) s
s = 18.91 m
Thus, the distance moves on applying brakes, is 18.91 m.
When half of the distance is traveled, the speed will be
v² -u² =2as
0² - u² = 2x (-3.2) (18.91/2)
u = 7.78 m/s
Thus, the speed will be 7.78 m/s i.e greater than 5.5 m/s.
Learn more about speed.
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