e. (3.001) 51. A sled accelerates down a hill and then slows down after it reaches a flat portion of ground. The speed of the sled s(t) (in ft/sec) at a time i (in sec) after movement begins can be approximated by: 1.5 for 0 SIS20 s()- 30 for 20 < rs 40 19

e. (3.001) 51. A sled accelerates down a hill and then slows down after it reaches a flat portion of ground. The speed of the sled s(t) (in ft/sec) at a time i (in sec) after movement begins can be approximated by: 1.5 for 0 SIS20 s()- 30 for 20 < rs 40 19

Name: Only question # 51 pls. e. 1(3.001)51. A sled accelerates down a hill
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Description: Only question # 51 pls. e. 1(3.001)51. A sled accelerates down a hill and then slows down after it reaches a flat portion of ground. The speed of the sled s(t) (in ft/sec) at a time i (in sec) after movement begins can be approximated by:(1.5tfor 0 S

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter9: Quadratic Functions And Equations

Section9.4: Solving Quadratic Equations By Factoring

Problem 2GP

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Question

Only question # 51 pls.

e. 1(3.001)
51. A sled accelerates down a hill and then slows down after it reaches a flat portion of ground. The speed of the sled s(t) (in ft/sec) at a time i (in sec) after movement begins can be approximated by:
(1.5t
for 0 SIS20
s(1) -
30
for 20 <IS 40
- 19
Determine the speed of the sled after 10 sec, 20 sec, 30 sec, and 40 sec. Round to 1 decimal place if necessary.
52. A car starts from rest and accelerates to a speed of 60 mph in 12 sec. It travels 60 mph for 1 min and then decelerates for 20 sec until
be modeled by:
:comes to rest. The speed of the car s(t) (in mph) at a time t (in sece
for 0sts 12
12
s(1) =
60
for 12 <IS72
(92 - 1? for 72 <IS 92

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