What is the unit for mass?

1.   ?    kg
2.   ?    Newton
3.   ?    Kg m/s
4.   ?    m/s**2

What is the unit for weight?

1.   ?    kg
2.   ?    Newton
3.   ?    Kg m/s
4.   ?    m/s**2

What is the unit for momentum?

1.   ?    kg
2.   ?    Newton
3.   ?    Kg m/s
4.   ?    m/s**2