Reaction Time Lab

Problems
How do distractions affect reaction time?
Hypotheses
Procedure: AGIC

Data:
Your 6 measurements (w/ and w/o cell phone)
Your averages
Class averages

Calculations of reaction time from distance

Conclusion….

Math
The meter stick drops at 9.8 m/sec/sec

Acceleration = (Vf-Vi)/t
Vi=0
Vf/2=Vavg
D=Vavg*t

Algebra
d= ½ (at2)
Or since we know a and can measure d

t= (sqrt(2d/a))

Enter d as meters (100 cm=1 m) and a as 9.8 m/sec/sec

And  the answer comes out in seconds.

Compare reaction times
(how far will a car travelling at 40 mph travel in those times)

AP _ Reaction Time Lab
Distance the meter stick dropped
Average distance dropped in cm 17.16 32.10 31.96
Focused Cell Phone Distraction  Conversation Distraction
5 23 36
14 19 26
8 32 28
9 30 22
17 27 11
6 26 15
13 30 15
9 28 20
7 20 32
10 19 36
8 28 22
8 17 23
10 26 25
18 40 27
20 25 18
18 20 10
20 23 20
6 25 20
4 5
13 14
11 22
15 47
7 28
8 17
14 74
18 34
22 45
16 34
26 63
15 26
10 23 24
6 18 90
20 15 75
14 32 30
20 21 29
10 36 18
10 35 34
18 29 23
16 19 17
12 10 11
16 21 24
8 15 23
31 15 80
15 27 12
3 19 53
13 28 50
9 10 23
14 12 22
27
5 27 12
10 23 18
9 40 21
18 32 19
7 23 13
16 22 8
10
33 38 36
20 48 27
17 43 53
37 23 36
26 27 25
8 33 30
50 65 50
27 35 31
38 60 16
19 37 19
16 55 9
23 39 21
58 32 20
30 33 25
28 35 42
16 39 43
22 50 15
20 37 53
28 23 23
28 23 36
26 30 39
19 22 40
20 22 38
23 30 32
23 26 30
21 27 46
16 32 56
10 30 58
15 45 80
40 26 40
18 32 18
14 80 18
14 43 12
13 39 22
13 13 24
13 22 24
23 80 50
25 50 60
50 35 38
14 40 28
14 40 51
23 33 31
7 12 39
8 30 80
14 43 23
13 24 80
8 20 21
9 46 22
13 36 80
10 25 40
12 40 30
13 23 27
16 20 19
20 30 80
13 32 18
13 25 24
9 23 45
10 24 30
15 27 31
16 25 45
14 29 23
16 23 42
11 80 38
19 40 19
31 80 23
20 23 31
8 21 8
16 9 7
8 13 10
5 29 13
11 6 8
7 15 14
17 25 21
13 26 24
21 42 9
12 41 16
12 47 27
12 35 20
47 77 38
23 30 59
28 22 80
42 39 80
28 23 80
25 38 67
13 15 49
7 36 30
10 13 37
4 76 35
7 12 20
6 18 28
57 30 35
16 43 76
29 32 31
20 20 31
20 28 31
25 36 22
13 24 16
20 46 24
12 27 9
3 69 30
7 23 6
23 16 3
27 34 36
25 17 34
14 20 59
20 30 36
38 32 32
37 70 70
17 80 28
16 49 30
9 26 30
20 80 21
15 51 38
12 30 14