FIGURE 8-7 Two Masses M₁ = 2

FIGURE 8-7 Two masses M₁ = 2.0 kg and M₂ = 4.0 kg are attached by a string as shown in Figure 8-7. M₁ falls vertically down and M₂ moves on a frictionless surface. Initially the system is at rest. Use g = 10 m/s².
-Refer to Figure 8-7. What is the speed of mass M₁ just before it touches the ground?

A) 2.3 m/s
B) 2.9 m/s
C) 3.8 m/s
D) 4.6 m/s
E) 5.8 m/s