A particle moves according to a law of motion s = f(t), t 2 0, where t is measured in seconds and s in feet. (t) = te t/5 (a) Find the velocity at time t (in ft/s). v(t) = (t – 5)e 5 (b) What is the velocity after 2 s? (Round your answer to two decimal places.) v(2) = [0.40 ft/s (c) When is the particle at rest? t = [0 (d) When is the particle moving in the positive direction? (Enter your answer using interval notation.) [0,5) (e) Find the total distance traveled during the first 12 s. (Round your answer to two decimal places.) 1.09 X ft

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section: Chapter Questions
Problem 18T
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How do I solve C, E, and H?

A particle moves according to a law of motion s = f(t), t 2 0, where t is measured in seconds and s in feet.
f(t) = tet/5
(a) Find the velocity at time t (in ft/s).
v(t) =
(† – 5)e
(b) What is the velocity after 2 s? (Round your answer to two decimal places.)
v(2) = [0.40
v ft/s
(c) When is the particle at rest?
t = [0
X S
(d) When is the particle moving in the positive direction? (Enter your answer using interval notation.)
[0,5)
(e) Find the total distance traveled during the first 12 s. (Round your answer to two decimal places.)
1.09
X ft
(f) Find the acceleration at time t (in ft/s?).
(1 – 10)e (¿)
25
a(t) =
Find the acceleration after 2 s. (Round your answer to three decimal places.)
a(2) = (-0.215
v ft/s?
(g) Graph the position, velocity, and acceleration functions for the first 12 s.
y
y
2.0
2.0
1.5
1.5
1.0
1.0
0.5
0.5
6.
8
10
12
6.
8.
10
12
-0.5
-0.5
- 1.0F
o-1.0F
y
y
2.0
2.0
1.5
a
1.5
1.0
1.0
0.5
0.5
8.
10
12
10
12
-0.5
-0.5
о-1.0
o-1.0F
(h) When, for 0st< o, is the particle speeding up? (Enter your answer using interval notation.)
(6,00)
When, for 0 st < ∞, is it slowing down? (Enter your answer using interval notation.)
[0,6)
Transcribed Image Text:A particle moves according to a law of motion s = f(t), t 2 0, where t is measured in seconds and s in feet. f(t) = tet/5 (a) Find the velocity at time t (in ft/s). v(t) = († – 5)e (b) What is the velocity after 2 s? (Round your answer to two decimal places.) v(2) = [0.40 v ft/s (c) When is the particle at rest? t = [0 X S (d) When is the particle moving in the positive direction? (Enter your answer using interval notation.) [0,5) (e) Find the total distance traveled during the first 12 s. (Round your answer to two decimal places.) 1.09 X ft (f) Find the acceleration at time t (in ft/s?). (1 – 10)e (¿) 25 a(t) = Find the acceleration after 2 s. (Round your answer to three decimal places.) a(2) = (-0.215 v ft/s? (g) Graph the position, velocity, and acceleration functions for the first 12 s. y y 2.0 2.0 1.5 1.5 1.0 1.0 0.5 0.5 6. 8 10 12 6. 8. 10 12 -0.5 -0.5 - 1.0F o-1.0F y y 2.0 2.0 1.5 a 1.5 1.0 1.0 0.5 0.5 8. 10 12 10 12 -0.5 -0.5 о-1.0 o-1.0F (h) When, for 0st< o, is the particle speeding up? (Enter your answer using interval notation.) (6,00) When, for 0 st < ∞, is it slowing down? (Enter your answer using interval notation.) [0,6)
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s= f(t) = te^(-t/5)

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