A pebble is released from rest at a certain height and
A pebble is released from rest at a certain height and falls freely, reaching an impact speed of 2 m/s at the floor. Next, the pebble is thrown down with an initial speed of 1 m/s from the same height. What is its speed at the floor?
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a pebble is released from rest at a certain height and falls freely reaching an impact speed of 2 ms at the floor next
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