Question 2 of 6 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 it comes to rest. The speed of the car s(t) (in mph) at a time t (in sec) after the car begins motion can be modeled by: for 0stS12 12 s(t) = 60 for 12
Question 2 of 6 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 it comes to rest. The speed of the car s(t) (in mph) at a time t (in sec) after the car begins motion can be modeled by: for 0stS12 12 s(t) = 60 for 12
Chapter6: Exponential And Logarithmic Functions
Section: Chapter Questions
Problem 51RE: The population of a city is modeled by the equation P(t)=256,114e0.25t where t is measured in years....
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Transcribed Image Text:Question 2 of 6
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 it comes to rest. The speed of the car s(t) (in mph) at a time t (in sec)
after the car begins motion can be modeled by:
for 0<t<12
s(t)
60
for 12<t<72
(92 -
for 72<t<92
Determine the speed of the car 6 sec, 12 sec, 63 sec, and 90 sec after the car begins motion. Round
your answer to the nearest tenth, if necessary.
ab 2: Sections 1.4, 1.6, 1.7 1 Page 2/12
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