Falcon slingshot initial velocity

The initial velocity of Falcon Slingshot is 70m/s, according to relevant public information, one end of the velocimeter is connected with one of the marbles of Falcon Slingshot to launch marbles, and then the initial velocity of Falcon Slingshot is 70m/s by checking the data of the velocimeter. Initial velocity: If the object is moving at variable speed, the initial velocity is called initial velocity.