A 20 kg bullet moving horizontally at 400 m/s penetrates a 2.9 kg wood block resting on a horizontal surface. If the bullet slows down to 300 m/s after emerging from the block, what is the speed of the block immediately after the bullet emerges?
Added by Travis M.
Step 1
First, we need to find the momentum of the bullet before it hits the block. We can use the formula: momentum = mass x velocity momentum = 20 kg x 400 m/s momentum = 8000 kg m/s Show more…
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