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The distance travelled by an object thrown upwards in t seconds is 30t − 4.9t2 metres. After how much time would it fall down? At what all times would it be 20 metres above the ground? |
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Answer» The distance travelled by an object thrown upwards in t seconds is 30t − 4.9t2 metres. After how much time would it fall down? At what all times would it be 20 metres above the ground? |
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