Suppose that an automobile's velocity starting from rest is 
where v is measured in feet per second. Find the acceleration at 5 seconds. Round your answer to one decimal place.
?
A. 3.3 ft/sec2
B. 2.6 ft/sec2
C. 0.9 ft/sec2
D. 0.7 ft/sec2
E. 13.1 ft/sec2
Answer: B
Mathematics
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