A small bomb, of mass 10. kg, is moving toward the North with a ...

[oliviahorn72]

A small bomb, of mass 10. kg, is moving toward the North with a velocity of 5.0 m/s. It explodes into three fragments:
 
  a 5.0 kg fragment moving West with a speed of 8.0 m/s; a 4.0 kg fragment moving East with a speed of 10. m/s; and a third fragment with a mass of 1.0 kg. What is the velocity of the third fragment? (Neglect air friction.)
  A) 40 m/s North
  B) 5.0 m/s South
  C) 50.m/s North
  D) zero
  E) 4.0 m/s North

Question 2

Mercury and the Moon are probably the least-habitable bodies in the solar system because they
 
  A) are unlikely to have liquids anywhere
  B) have never had carbon compounds on their surfaces
  C) do not have atmospheres containing oxygen
  D) do not receive any sunlight

[leannegxo]

Answer to Question 1

C

Answer to Question 2

A

[oliviahorn72]

Excellent

[isabelt_18]

TYSM