Answers to Chapter Seven Questions
7.1)
|
Event |
Anne and Bev |
Chuck and Dean |
||
|
x |
t |
X |
T |
|
|
A |
0 |
0 |
0 |
0 |
|
B |
0 |
400/3 |
-100 |
500/3 |
|
C |
90 |
450/3 |
0 |
120 |
|
D |
90 |
850/3 |
-100 |
860/3 |
7.2)
|
Event |
Anne and Bev |
Chuck and Dean |
||
|
x |
t |
X |
T |
|
|
A |
0 |
0 |
0 |
0 |
|
B |
0 |
135 |
-100 |
160 |
|
C |
90 |
150 |
0 |
120 |
|
D |
90 |
285 |
-100 |
|
7.3)
|
Event |
Anne and Bev |
Chuck and Dean |
||
|
x |
t |
X |
T |
|
|
A |
0 |
0 |
0 |
0 |
|
B |
0 |
134 |
-100 |
165 |
|
C |
90 |
152 |
0 |
120 |
|
D |
90 |
|
-100 |
285 |
7.4) Yes,
on the graph the stopped bus is 4 boxes long, and each box corresponds to 10
feet. So the flatbed truck observers
measure the stopped bus to be 40 feet long, the shrinkage factor times 50 feet.