Question

Please help! The position equation for a particle is s(t)= sqrt(2t + 1) where s is measured in feet and t is measured in seconds. Find the acceleration of the particle at 4 seconds.

a. 3 ft/sec^2
b. 1/3 ft/sec^2
c. -1/27 ft/sec^2
d. none of these

Answer 1

The answer is C. Note that acceleration is just the second derivative of displacement.