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o-na [289]
3 years ago
9

I need help answering 14,15,16,17

Physics
1 answer:
miss Akunina [59]3 years ago
3 0
014: 
No answer possible.  We don't know anything about the object.

015:
Momentum = (mass) x (speed)
Momentum of the bullet = (0.0022 kg) (54,869 m/s) = 120.7 kg-m/s .

Momentum of the ball = (0.146 kg) x (speed of the ball)
120.7 kg-m/s = (0.146 kg) x (speed of the ball)

Speed of the ball = (120.7 kg-m/s) / (0.146 kg) = 826.7 m/s
Doubtful.  This speed is about 1,849 miles per hour.


016:
Kinetic energy = (1/2) (mass) (speed)²
= (1/2) (0.0022 kg) (54,869 m/s)²
= (1/2) 0.0022 kg) (3,010,607,161 m²/s²) 
= 3,311,668 Joules for the bullet

017:
Kinetic energy = (1/2) (mass) (speed)²
= (1/2) (0.146 kg) (826.7 m/s)²
= (1/2) 0.146 kg) (683,432.9 m²/s²)
=  49,891 Joules for the ball
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