Series = <span>{2, 5 ,6, 7, 15, 16, 17}
Here, Median = 7
Then Q3 = </span><span>{15, 16, 17}
Median of Q3 = 16
In short, Your Answer would be: 16
Hope this helps!</span>
Before the driver applies the brakes ( with the reaction time ):
d 1 = v0 · t = 20 m/s · 0.53 s = 10.6 m
After that:
v = v0 - a · t1
0 = 20 m/s - 7 · t1
7 · t1 = 20
t1 = 2.86 s
d 2 = v 0 · t1 - a · t1² / 2
d 2 = 20 m/s · 2.86 s - 7 m/s² · (2.86 s)²/2 = 57.2 m - 28.6 m = 28.6 m
d = d 1 + d 2 = 10.6 m + 28.6 m = 39.2 m
Answer: the stopping distance of a car is 39.2 m.
The correct answer is D. An Entrepreneur.
I hope this helps. :)
And have a great day.
