To calculate the initial speed of one of the two objects that stick together after a collision or interaction, you can use the principle of conservation of momentum, assuming the collision is elastic or that no external forces act on the system.
The formula for the conservation of momentum is:
Initial momemtum = Final momemtum.
After the collision, the two objects stick together and move with a common final speed. You can measure this final speed using a motion sensor or by analyzing the motion of the objects after the collision.
This formula allows you to find the initial speed of one of the objects involved in the collision, given the masses of both objects, their initial velocities, and the final velocity when they stick together after the collision.