Two Astronauts of Equal Mass Are Holding on to Each

Multiple Choice

Two astronauts of equal mass are holding on to each other and moving at a speed of 30 m/s. They push off of each other and one of the astronauts moves in the same direction as the two were initially moving but at 60 m/s. The velocity of the second astronaut is

A) 60 m/s backward.
B) 30 m/s backward.
C) zero.
D) 30 m/s forward.
E) 60 m/s forward.