e) None of the above.sele13 When a 1984 Alfa Romeo Spider sports car accelerates in the x-direction at the maximumÞóssible rate, its motion during the first 20. seconds is extremely well modeled by the simpleequation vx = (60 m/s)t, where t is time in seconds and vz is in m/s. In other words, the squareof the car's velocity increases linearly with time. What is its acceleration after 3s, assuming thatthe car starts from rest at t = 0 s?2 3%3Da) 6.7 m/s2b) 2.0 m/s2c) 7.2 m/s²d) 2.2 m/s²e) 2.7 m/s2

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Asked Dec 11, 2019
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Can you solve this problem and show the steps? Been trying to figure this one out for s while and can't quite seem to get it right. The correct answer is 2.2 by the way 

e) None of the above.
sele
13 When a 1984 Alfa Romeo Spider sports car accelerates in the x-direction at the maximum
Þóssible rate, its motion during the first 20. seconds is extremely well modeled by the simple
equation vx = (60 m/s)t, where t is time in seconds and vz is in m/s. In other words, the square
of the car's velocity increases linearly with time. What is its acceleration after 3s, assuming that
the car starts from rest at t = 0 s?
2 3
%3D
a) 6.7 m/s2
b) 2.0 m/s2
c) 7.2 m/s²
d) 2.2 m/s²
e) 2.7 m/s2
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e) None of the above. sele 13 When a 1984 Alfa Romeo Spider sports car accelerates in the x-direction at the maximum Þóssible rate, its motion during the first 20. seconds is extremely well modeled by the simple equation vx = (60 m/s)t, where t is time in seconds and vz is in m/s. In other words, the square of the car's velocity increases linearly with time. What is its acceleration after 3s, assuming that the car starts from rest at t = 0 s? 2 3 %3D a) 6.7 m/s2 b) 2.0 m/s2 c) 7.2 m/s² d) 2.2 m/s² e) 2.7 m/s2

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Expert Answer

Step 1

Given,

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v? = 60t ..(1)

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Step 2

Differentiate both side with respect to ‘t’;

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Step 3

From equation (1), when ...

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Kinematics

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