5. A spring (k = 20 N/m) sits on a frictionless surface. The spring is compressed 20 cm and a 2 kg mass is placed before

[answerhappygod]

5. A spring (k = 20 N/m) sits on a frictionless surface. The spring is compressed 20 cm and a 2 kg mass is placed before the spring and released from rest. How much time passes between the the time that the mass is at the point x = 0 m and x = 2.0 m?
a.) 4.34 s
b.) 1.42 s
c.) 2.48 s
d.) 0.23 s
e.) None of the above.