The initial momentum of the system can be expressed as,

The final momentum of the system can be given as,

According to conservation of momentum,

Plug in the known expressions,

Initially, the second mass move towards the first mass therefore the initial speed of second mass will be taken as negative and the recoil velocity of first mass is also taken as negative.
Plug in the known values,

Thus, the final velocity of second mass is 2.99 m/s.
The answers A, this is because Ice is originally water and when water goes below it's freezing point it turns into ice
Answer:
charge
Explanation:
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To get a uniform field in the central region between the coils, current flows in the same direction in each.
-reflection and refraction of light
-dispersion of light
-absorption of light
-polarization of light