What is the formula for momentum? *

p = m/v
f = m x a
f = m/s
p = m x v

momentum in a body can be calculated using

Momentum=Mass×Velosity

ie(p=m×v)

come closer and become far apart and become steam/gas

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this