Multiple Choice
A mass m1 = 7.0 kg is at rest on a frictionless horizontal surface and connected to a wall by an ideal spring with a spring constant of k = 50 N/m as shown in the figure.A second mass m2 = 5.0 kg is moving to the left at vO.The two masses then collide and stick together.If the maximum compression of the spring is 1.2 m,what was the initial velocity of the second mass (vO) ? 
A) 2.45 m/s
B) 3.68 m/s
C) 6.32 m/s
D) 8.00 m/s
E) 5.88 m/s
Correct Answer:

Verified
Correct Answer:
Verified
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