Determine new velocity? ASAP?

Question

When the two asteroids collide, they stick together. Based on your graph in Part C, determine the velocity of the new megaasteroid.

Asteroids: http://media.cheggcdn.com/media/1fd/1fd12a1e-e0fc-...

Part C graph: http://media.cheggcdn.com/media/50a/50a9abad-6c5a-...

Thank you!

Answer 1

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in anelastic collision the momentum is conserved

m1v1+m2v2=(m1+m2)v

then

v=(m1v1+m2v2)/(m1+m2)

v=(500*20+250*10)/(500+250)

v=12500/750=16.6 m/s

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