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Two asteroids strike head-on: before the collision, asteroid A (mA = 7.8×1012 kg) has velocity 3.3...

Two asteroids strike head-on: before the collision, asteroid A (mA = 7.8×1012 kg) has velocity 3.3 km/s and asteroid B (mB = 1.38×1013 kg )has velocity 1.4 km/s in the opposite direction.

1) If the asteroids stick together, what is the magnitude of the velocity of the new asteroid after the collision?

2) If the asteroids stick together, what is the direction of the velocity of the new asteroid after the collision?

a. in the original direction of asteroid B
b. in the original direction of asteroid A
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