The function gives the distances (in feet) traveled in time t (in seconds) by a particle. Find the velocity and acceleration at the given time.s = -9t3 + 4t2 + 4t - 9, t = 3
A. v = -215 ft/s, a = -154 ft/s2
B. v = -57 ft/s, a = -215 ft/s2
C. v = -154 ft/s, a = -215 ft/s2
D. v = -215 ft/s, a = -57 ft/s2
Answer: A
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A. 
B. 
C. - 
D. 
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A. 3.15 × 10-3 B. 3.15 × 104 C. 3.15 × 10-4 D. 3.15 × 10-5
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A. 
B. 
C. 
D. 