a gun fires a bullet horizontally from a height of 20m velicity of the

1.	a gun fires a bullet horizontally from a height of 20m velicity of the bullet is 900m/s. how long does the bullet stay in air.
Answer» Explanation: CORRECT option is A -0.25 m s−1 Initial momentum of the system Pi=0 Given: Mbullet=0.02 KG Vbullet=100 m/s Mgun=8 kg Let the RECOIL velocity of gun be V. Applying the conservation of LINEAR momentum : Pf=Pi Or MgunV+MbulletVbullet=0 Or 8V+0.02×100=0 ⟹ V=−0.25 m/s

a gun fires a bullet horizontally from a height of 20m velicity of the bullet is 900m/s. how long does the bullet stay in air.

Answer»

Explanation:

CORRECT option is

-0.25 m s−1

Initial momentum of the system Pi=0

Given: Mbullet=0.02 KG Vbullet=100 m/s Mgun=8 kg

Let the RECOIL velocity of gun be V.

Applying the conservation of LINEAR momentum : Pf=Pi

Or MgunV+MbulletVbullet=0

Or 8V+0.02×100=0

⟹ V=−0.25 m/s

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a gun fires a bullet horizontally from a height of 20m velicity of the bullet is 900m/s. how long does the bullet stay in air. ​

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a gun fires a bullet horizontally from a height of 20m velicity of the bullet is 900m/s. how long does the bullet stay in air.