8a2-10ab+15b+10 Explaintion:
Answer:
I would go with 2
Explanation:
But i would also not go with my answer. Lol
Since both hv same mass and elsstic collision, so their velocity will exchange. Bob A will stop and bob B will move with speed of A just before the collision.
Speed will be = squreroot ( 2*g*L)
L is length of pendulum
Answer:the witch has nothing to do with the problem
Explanation: