A body is traveling in a straight line. The equation of motion is given by
x(t)=5t3+3t2-6t
where
x is given in meters, and
t is given in seconds.
The acceleration of the body in
m/s2 at t = 5.25 seconds most nearly is
6.000
163.5
436.8
752.9
HINT
This question of the day was provided by the
courtesy of Professor
Autar Kaw of the
University of South Florida
from the book FE Practice Exam With Complete Solutions
