A block ( m = 2.62 kg) slides at a speed of 94.4 cm/s across a horizontal, frictionless surface toward a horizontal spring ( k = 238 N/m). Point P is...

A block (m = 2.62 kg) slides at a speed of 94.4 cm/s across a horizontal, frictionless surface toward a horizontal spring (k = 238 N/m). Point P is a distance d = 35.9 cm from the end of the spring.

How much time elapses between the first and second time the right side of the box passes point P? in seconds