A Bullet Is Fired Through a Board, 14

question 15

Multiple Choice

A bullet is fired through a board, 14.0 cm thick, with its line of motion perpendicular to the face of the board. If it enters with a speed of 450 m/s and emerges with a speed of 220 m/s, what is the bullet's acceleration as it passes through the board?

• A) −500 km/s²
• B) −550 km/s²
• C) −360 km/s²
• D) −520 km/s²
• E) −275 km/s²

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