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Mathematics
Mathematics
Problem
A particle moves along a line with velocity
v
(
t
)
=
4
cos
t
v(t)=4\cos t
v
(
t
)
=
4
cos
t
meters per second for
0
≤
t
≤
π
2
0\le t\le \frac{\pi}{2}
0
≤
t
≤
2
π
. What is its displacement (in meters) during this time interval? a)
−
4
-4
−
4
b)
π
\pi
π
c)
4
4
4
d)
2
π
2\pi
2
π
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