What is the speed of the block immediately after the bullet

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Q. A 28.0 kg child plays on a swing having support ropes that are 1.80 m long. A friend pulls her back until the ropes are 43.0 from the vertical and releases her from rest. What is the potential energy for the child just as she is released, compared with the potential energy at the bottom of the swing? How fast will she be moving at the bottom of the swing?

Q. A 4.0 block of wood sits on a table. A 3.0 bullet, fired horizontally at a speed of 510 , goes completely through the block, emerging at a speed of 180 . What is the speed of the block immediately after the bullet exits?

Reference no: EM1354835

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