Question

Two birds collide in midair. Before the collision, their combined momentum was 88 kg•m/s to the west. What is their combined momentum after the collision?
A. 88 kg•m/s east
B. 88 g•m/s north
C. 88 kg•m/s down
D. 88 kg•m/s west

Answers

Damon
NEWTON'S FIRST LAW !!!!!!!!!!!

There is NO external force on this system

therefore

There is NO CHANGE of momentum.

Never ever forget that !!!

D. !!!!!!
Damon
That did it !
bobpursley
Here in texas, they often fall to the ground after collision... :)
Damon
LOL, it was about the horizontal plane, but yes that could happen

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