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Physics
Physics
Problem
A body’s velocity decreases uniformly from
30
m/s
30\,\text{m/s}
30
m/s
at
t
=
0
t=0
t
=
0
to
10
m/s
10\,\text{m/s}
10
m/s
at
t
=
5
s
t=5\,\text{s}
t
=
5
s
. What is the sign of its acceleration during this interval? a) Zero b) Negative c) Positive d) Cannot be determined
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