A projectile is moving at 20 m/s at its highest point, where it breaks into two equal parts due to an internal explosion. One part moves vertically up at 30 m/s with respect to the ground. Then the other part will move at:

# A projectile is moving at 20 m/s at its highest point, where it breaks into two equal parts due to an internal explosion. One part moves vertically up at 30 m/s with respect to the ground. Then the other part will move at:

1. A

20 m/s

2. B

$10\sqrt{13}\mathrm{m}/\mathrm{s}$

3. C

50 m/s

4. D

30 m/s

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### Solution:

Using linear momentum conservation,

Therefore,

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