Direction of the change of momentum

AI Thread Summary
The discussion centers on determining the direction of the change in momentum of a ball struck by a stick. The initial momentum is directed west, while the force applied by the stick is directed north. The correct approach involves recognizing that momentum and force are distinct vector quantities and cannot be directly added. The change in momentum aligns with the direction of the applied force, which is north. Therefore, the change in momentum is best represented by the direction of the force applied.
oalanojr
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I thought this question was fairly simple but apparently I'm getting the wrong answer 1.A ball moves in the direction of the arrow labeled g in the figure (which points left or west direction). The ball is struck by a stick which briefly exerts a force on the ball in the direction of the arrow labeled a in the figure (which points up or north direction). Which arrow best describes the direction of the change in the ball's momentum? (the original question as well as my attempt are in a picture attachment)

My attempt:
To find the change in momentum, I just did the final momentum minus the initial momentum.
I thought the answer was arrow B.


Thanks for the help in advance
 

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Useful equation: F(net)=dp/dt

Given:
Initial VELOCITY (initial MOMENTUM) is in the direction of g^vector.
A net FORCE is applied in the direction of the a^vector.

Ask yourself: did you think about it appropriately at first? Can you truly add those vectors quantities?
 
oh ok i got it. you can't add those two together because one is a momentum vector and the other is a net force. so the change of direction would be just in the direction that the force was applied
 
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