Answer:
- 3.33 m /s
Step-by-step explanation:
m1 = 5 kg
m2 = 10 kg
u1 = 10 m/s
u2 = - 10 m/s
Let the velocity of the combination of the blob is v.
Use the conservation of momentum

5 x 10 - 10 x 10 = (5 + 10)v
50 - 100 = 15 v
v = - 3.33 m /s
Thus, the velocity of the blob after sticking together is - 3.33 m/s.