About units are used in this section

[StrivnX]

When the instructor set values like MaxSpeed…InitialSpeed
He chooses 1300 without mentioning what this number means.
is the meaning of that number they will launch a projectile with a launch speed of 1300 cm/s?

same as of player’s speed movement…he didn’t add any force to handle it but he chooses to change the local location of the player via passing speed, a scale of the input, and DeltaTimeSeconds.
then add it to AddActorLocalOffset…regardless g acceleration, friction…etc

[DanM]

1. All units are in “Unreal Units” where 1UU == 1cm, so yes that should be 1300cm/s
2. The movement isn’t physics based, so yes, it’s just moving by an offset without regards to mass, friction, etc.