If a man increases his speed by 2m/s, his K.E. is doubled. What is the original speed of man?
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Answered by
57
solve further by using Quadratic formula, and u will have the required answer..
hope it helps you.
hope it helps you.
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Answered by
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Let we consider it's original speed = x m/sec
and second speed be y m/sec
y = x+2 m/sec
Takes equation first
...eq(1)
Takes equation second
...eq(2)
Divide both equation
or
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