Collisions & Motion (Momentum & Energy) Video Lessons

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Problem: A 13.9 g bullet is fired horizontally into a 0.518 kg wooden block resting on a horizontal surface (μ = 0.125). The bullet goes through the block and comes out with a speed of 233 m/s. If the block travels 7.29 m before coming to rest, what was the initial speed of the bullet? The acceleration of gravity is 9.8 m/s2. 1. 421.185 2. 462.083 3. 475.131 4. 428.393 5. 771.008 6. 608.548 7. 390.493 8. 415.722 9. 506.991 10. 636.296

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Problem Details

A 13.9 g bullet is fired horizontally into a 0.518 kg wooden block resting on a horizontal surface (μ = 0.125). The bullet goes through the block and comes out with a speed of 233 m/s. If the block travels 7.29 m before coming to rest, what was the initial speed of the bullet? The acceleration of gravity is 9.8 m/s2.

1. 421.185

2. 462.083

3. 475.131

4. 428.393

5. 771.008

6. 608.548

7. 390.493

8. 415.722

9. 506.991

10. 636.296

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