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Yakvenalex [24]
2 years ago
13

In a police ballistics test, 2.00-g bullet traveling at 700 m/s suddenly hits and becomes embedded in a stationary 5.00-kg wood

block. What is the speed of the block immediately after the bullet has stopped moving relative to the block
Physics
1 answer:
aksik [14]2 years ago
3 0

Answer:

  • Here we use the conservation of momentum theorem.

  • m stands for mass, and v stands for velocity. The numbers refer to the respective objects.

  • m1v1 + m2v2 = m1vf1 + m2vf2

  • Since the equation is perfectly inelastic, the final velocity of both masses is the same. Let’s account for this in our formula.

  • m1v1 + m2v2 = vf(m1 + m2)

<u>Let’s substitute in our givens.</u>

(0.002 kg)(700 m/s) + (5 kg)(0 m/s) = vf(0.002 kg + 5 kg)

I assume you are proficient in algebra I, so I will not include the steps to simplify this equation.

Note that I have considered the bullet’s velocity to be in the positive direction,

The answer is vf = 0.280 m/s

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