What the difference between the one with the red dot and the one with the solid red. Explain the whole thing in general actually
. If you can. THX
2 answers:
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P = mv
This is a momentum question:
Momentum is always conserved so the momentum before and after a collision must be equal so:
The velocity of the two objects after they collide and dont stick together if no KE is lost is dependent on the mass of each of the objects by:
Where i is initial and f is final meaning before and after the collision