Physics, 14.01.2020 03:31 aaliyahettorre
When you drop a pebble from height h, it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with twice speed?
Answers: 1
. If t is doubled, H must be 
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When you drop a pebble from height h, it reaches the ground with speed v if there is no air resistan...
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