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Physics
Physics
Problem
A particle travels with velocity
5
cm/s
5\text{ cm/s}
5
cm/s
from
t
=
0
t=0
t
=
0
to
t
=
4
t=4
t
=
4
seconds and
−
2
cm/s
-2\text{ cm/s}
−
2
cm/s
from
t
=
4
t=4
t
=
4
to
t
=
7
t=7
t
=
7
seconds. Determine its average velocity over the entire interval
0
≤
t
≤
7
0\le t\le 7
0
≤
t
≤
7
seconds. (Express your answer in cm/s.)
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