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A sling shot obeying hookes law is used to launch pebbles vertically into the air. You observe that if you pull a pebble back 11.1cm against the elastic band , the pebble goes 5.2m high. Assuming air drag is negligible, how high will the pebble go if you pull it back 22.2cm instead. B) how far must you pull it back so it will reach 10.4m If you pull a pebble that is twice as heavy back 11.1cm how high will it go?

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