The time taken for the car to reach the limit or amplitude of the motion is 0.33 s.
The equation for the simple harmonic motion of the block is calculated as follows;
y = A sin(ωt + Φ)
where;
The angular speed is calculated as follows;
[tex]\omega = \sqrt{\frac{k}{m} } \\\\\omega = \sqrt{\frac{25}{0.5} } \\\\\omega = 7.07 \ rad/s[/tex]
[tex]\Phi = sin^{-1} (\frac{-4}{6} )\\\\\Phi = -0.73 \ rad[/tex]
The time taken for the car to reach the limit or amplitude of the motion is calculated as follows;
0.06 = 0.06sin(7.07t - 0.73)
1 = sin(7.07t - 0.73)
7.07t - 0.73 = sin⁻¹(1)
7.07t - 0.73 = 1.57
7.07t = 2.3
t = 2.3/7.07
t = 0.33 s
Learn more about simple harmonic motion here: https://brainly.com/question/17315536