Position #3
Solar System
Orion Arm
Milky Way Galaxy
Universe
Mind of God
Answer:
Option D
2 m/s East
Explanation:
From the law of conservation of momentum, the sum of initial momentum equals the sum of final momentum
Momentum, p=mv where m is the mass and v is the velocity
Since the masses are the same then
Therefore

where
and
are final velocities of objects while
and
are the initial velocities respectively
Taking East direction as positive then West as negative and by substitution

Therefore
hence East since it's positive
All except B are examples of force