Exercises 1-4 give the positions s 1) of a body moving on a coor- ROM EBsite dinate line, with s in meters and t in seconds. (a) Find the body's displacement and average velocity for the given time interval. (b) Find the body's speed and acceleration at the endpoints of the interval. CD-R (c) When if ever during the interval does the body change direc- w tion? 1. s = t2 – 3t + 2, 0

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EXERCISES 2.2
Motion Along a Coordinate Line
Exercises 1-4 give the positions s = f(t) of a body moving on a coor-
dinate line, with s in meters and t in seconds.
9. Finding g on a s
used a spring
the surface at
CD-ROM
WEBsite
ation of gravi
ers expected
(1/2)g, t² me
height 20 sec
(a) Find the body's displacement and average velocity for the
given time interval.
(b) Find the body's speed and acceleration at the endpoints of
the interval.
10. Speeding bulle
(c) When if ever during the interval does the body change direc- WEBsite face of the n
after t sec. C
CD-ROM
tion?
s = 832t
each case?
1. s = t2 – 3t + 2, 0<t<2
2. s = 6t – t, 0<t<6
3. s = -13 + 3t² – 3t, 0<t< 3
11. Free fall from
CD-ROM
from the To
WEBsite
4. s = (t*/4) – t³ + t², 0<t< 3
above grour
5. Particle motion At time t, the position of a body moving along the
s-axis is s = t³ – 6t² + 9t m .
(a) What v
eration
(a) Find the body's acceleration each time the velocity is zero.
(b) About
(b) Find the body's speed each time the acceleration is zero.
ground
(c) Find the total distance traveled by the body from t = 0 to
t = 2.
(c) What
impac
6. Partiola
12
Galileo's fr
Transcribed Image Text:EXERCISES 2.2 Motion Along a Coordinate Line Exercises 1-4 give the positions s = f(t) of a body moving on a coor- dinate line, with s in meters and t in seconds. 9. Finding g on a s used a spring the surface at CD-ROM WEBsite ation of gravi ers expected (1/2)g, t² me height 20 sec (a) Find the body's displacement and average velocity for the given time interval. (b) Find the body's speed and acceleration at the endpoints of the interval. 10. Speeding bulle (c) When if ever during the interval does the body change direc- WEBsite face of the n after t sec. C CD-ROM tion? s = 832t each case? 1. s = t2 – 3t + 2, 0<t<2 2. s = 6t – t, 0<t<6 3. s = -13 + 3t² – 3t, 0<t< 3 11. Free fall from CD-ROM from the To WEBsite 4. s = (t*/4) – t³ + t², 0<t< 3 above grour 5. Particle motion At time t, the position of a body moving along the s-axis is s = t³ – 6t² + 9t m . (a) What v eration (a) Find the body's acceleration each time the velocity is zero. (b) About (b) Find the body's speed each time the acceleration is zero. ground (c) Find the total distance traveled by the body from t = 0 to t = 2. (c) What impac 6. Partiola 12 Galileo's fr
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