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Physics
Physics
Problem
A car’s velocity decreases uniformly from
20
m/s
20\,\text{m/s}
20
m/s
to
0
m/s
0\,\text{m/s}
0
m/s
in
5
s
5\,\text{s}
5
s
. What is the sign of the slope of its velocity–time graph during this interval, and what does that sign indicate about the car’s motion?
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