A 10-G Bullet Moving Horizontally with a Speed of 2

question 59

Multiple Choice

A 10-g bullet moving horizontally with a speed of 2.0 km/s strikes and passes through a 4.0-kg block moving with a speed of 4.2 m/s in the opposite direction on a horizontal frictionless surface. If the block is brought to rest by the collision, what is the kinetic energy of the bullet as it emerges from the block?

• A) 0.51 kJ
• B) 0.29 kJ
• C) 0.80 kJ
• D) 0.13 kJ
• E) 20 kJ

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