Work, Energy and Power

Question: If a man increase his speed by 2 m/s , his K.E. is doubled, the original speed of the man is

1) $(1 + 2\sqrt 2 )\;m/s$

2) 4 m/s

3) $(2 + 2\sqrt 2 )\,m/s$

4) $(2 + \sqrt 2 )\;m/s$

Solution:

Explanation: No Explanation

WEP Conservation of Energy and Momentum

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