The velocity and acceleration of the object after 3 seconds are;
Velocity = 63 m/s
Acceleration = 30 m/s²
We are given the function that represents the position of an object as;
s(t) = t³ + 6t² + 7 (meters)
v(t) = s'(t) = 3t² + 12t
a(t) = v'(t) = 6t + 12
Thus;
v(3) = 3(3²) + 12(3)
v(3) = 63 m/s
Likewise;
a(3) = 6(3) + 12
a(3) = 30 m/s²
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