A ranger in a national park is driving at 21.8 mi/h when a deer jumps into the road
229 ft ahead of the vehicle. After a reaction time of t the ranger applies the brakes to
produce and acceleration of −8.84 ft/s
2
.
What is the maximum reaction time allowed if she is to avoid hitting the deer?
Answer in units of s.

1.

because it says use -2,0,and 2 for x, we can plug those numbers into the equation. y/4=3/4(-2)+2   y/4= -1 1/2 +2 now to get x by itself, we can multiply each side by 4. y=-6+8 which equals y=2 when x=-2. now you can do the same thing with 0 and 2 as x. you get y=8 when x=0 and y=14 when x=2.

x   |   y

-2 |   2

0   |   8

2   |   14

truck y has a greater velocity than truck x.

answer(20) psi;