A particle moves according to a law of motions = f(t), t 2 0, where t is measured in seconds and s in feet. (If an answer does not exist, enter DNE.) f(t) = - 9e? + 24t (a) Find the velocity (in ft/s) at time t. v(t) = (32 – 4) 18t + 2 ft/s (b) What is the velocity (in ft/s) after 1 second? v(1) = 9 ft/s (c) When is the particle at rest? (Enter your answers as a comma-separated list.) t = 2.4
A particle moves according to a law of motions = f(t), t 2 0, where t is measured in seconds and s in feet. (If an answer does not exist, enter DNE.) f(t) = - 9e? + 24t (a) Find the velocity (in ft/s) at time t. v(t) = (32 – 4) 18t + 2 ft/s (b) What is the velocity (in ft/s) after 1 second? v(1) = 9 ft/s (c) When is the particle at rest? (Enter your answers as a comma-separated list.) t = 2.4
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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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. (If an answer does not
exist, enter DNE.)
f(t) = t3 - 9t2 + 24t
(a) Find the velocity (in ft/s) at time t.
- (3² – 181 + 24)
v(t) =
v ft/s
(b) What is the velocity (in ft/s) after 1 second?
v(1) = 9
v ft/s
(c) When is the particle at rest? (Enter your answers as a comma-separated list.)
t = 2,4
(d) When is the particle moving in the positive direction? (Enter your answer using interval notation.)
(0,2) U (4,00)
(e) Draw
diagram to illustrate the motion of the particle and use it to find the total distance (in ft) traveled during the first 6
seconds.
44
ft
(f) Find the acceleration (in ft/s2) at time t.
a(t) =
-12
X ft/s2
Find the acceleration (in ft/s2) after 1 second.
a(1) =
ft/s2
(g) Graph the position, velocity, and acceleration functions for 0 sts 6.
30
20
10아
1
2
6
- 10
a
30아
20아
a
10아
- 10
30
20!
a
10
-10

Transcribed Image Text:(g) Graph the position, velocity, and acceleration functions for 0 sts 6.
30
20
1아
1
2
6
-10
a
30
20
10
6.
-10
30
20
a
10
-10
30
20
10
5
6
-10
(h) When is the particle speeding up? (Enter your answer using interval notation.)
When is it slowing down? (Enter your answer using interval notation.)
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