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Physics
Physics
Problem
A car travels
120
m
120\,\text{m}
120
m
east, then
70
m
70\,\text{m}
70
m
west in a straight line. Taking east as positive, choose the correct pair
(
distance travelled
,
displacement
)
(\text{distance travelled},\ \text{displacement})
(
distance travelled
,
displacement
)
. a)
(
50
m
,
+
50
m
)
(50\,\text{m},\ +50\,\text{m})
(
50
m
,
+
50
m
)
b)
(
190
m
,
+
50
m
)
(190\,\text{m},\ +50\,\text{m})
(
190
m
,
+
50
m
)
c)
(
190
m
,
−
50
m
)
(190\,\text{m},\ -50\,\text{m})
(
190
m
,
−
50
m
)
d)
(
50
m
,
+
190
m
)
(50\,\text{m},\ +190\,\text{m})
(
50
m
,
+
190
m
)
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