Active Physics
Intersection Math
Name: _____________________________
In Class Problems
1. Complete the separate Intersection A worksheet. (must be turned in with this sheet)
2. Complete the separate Intersection B worksheet. (must be turned in with this sheet)
Online Submission Problems
For each problem, solve for the Go Zone, Stop Zone, and overlap distances in the space to the right of the
variables. Then determine if the intersection is safe or not.
3. yellow light time:
(Ty) = __________
driver response time: (Tr) = __________
speed of car
(v) = __________
braking rate
(a) = __________
width of intersection (w)= __________
Is the Intersection #3 Safe? __________
4. yellow light time:
(Ty) = __________
driver response time: (Tr) = __________
speed of car
(v) = __________
braking rate
(a) = __________
width of intersection (w)= __________
Is the Intersection #4 Safe? __________
5. yellow light time:
(Ty) = __________
driver response time: (Tr) = __________
speed of car
(v) = __________
braking rate
(a) = __________
width of intersection (w)= __________
Is the Intersection #5 Safe? __________
6. yellow light time:
(Ty) = __________
driver response time: (Tr) = __________
speed of car
(v) = __________
braking rate
(a) = __________
width of intersection (w)= __________
Is the Intersection #6 Safe? __________
7. yellow light time:
(Ty) = __________
driver response time: (Tr) = __________
speed of car
(v) = __________
braking rate
(a) = __________
width of intersection (w)= __________
Is the Intersection #7 Safe? __________
8. yellow light time:
(Ty) = __________
driver response time: (Tr) = __________
speed of car
(v) = __________
braking rate
(a) = __________
width of intersection (w)= __________
Is the Intersection #8 Safe? __________
Homework Problems
For each problem, solve for the Go Zone, Stop Zone, and overlap distances in the space to the right of the
variables. Then determine if the intersection is safe or not.
9. Ty = 3 s; Tr = 2 s; v = 25 m/s; a = 6 m/s/s; w = 7 m
Is Intersection #9 Safe? ______
10. Ty = 3 s; Tr = 1.5 s; v = 20 m/s; a = 4 m/s/s; w = 7 m
Is Intersection #10 Safe? ______