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18. We use the functional notation
x
(
t
),
v
(
t
) and
a
(
t
) and find the latter two quantities by
differentiating:
vt
dx t
t
ta
t
dv t
dt
t
b g
bg
b g
==
−
+
−
15
20
30
2
and
with SI units understood. These expressions are used in the parts that follow.
(a) From 0
15
20
2
=−
+
t
, we see that the only positive value of
t
for which the particle
is (momentarily) stopped is
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This note was uploaded on 09/03/2009 for the course PHYS 1200 taught by Professor Stoler during the Spring '06 term at Rensselaer Polytechnic Institute.
 Spring '06
 Stoler
 Physics

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