Two masses m1 = 1 kg and m2 = 2 kg are connected by a massless spring (k = 1000 N/m) as given below. Initially, m1 is at rest and m2 is moving with velocity v0 = 5 m/s. After some time, it is observed that spring is stretched by 10 cm and the speed of m1 is 2 m/s, find the speed of m2 at this moment.
1
4.24 m/s
2
3.5 m/s
3
5.2 m/s
4
3.9 m/s