Answer:
4794.4 km/h
Step-by-step explanation:
Given:
The initial velocity v₁ = 4720 km/h
velocity of the motor,
= 93 km/h (relative to the module)
where,
is the velocity of the motor
is the velocity of the command module
let, the mass of the command module be m
thus, the mass of the motor will be '4m'
Now. the mass of the vehicle before disengaged = 4m + m = 5m
using the concept conservation of momentum ,
we have

on substituting the values in the above equation, we get

or

or

or
= 4794.4 km/h