A man wearing a bullet proof …

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A man wearing a bullet proof vest stands still on roller skates . The total mas is 80kg . A bullet of mass 20grams is fired at 400m/s . Itis stopped by the vest and falls to the ground . What is then the velocity of the man?

Posted by Nitin Chaudhary 1 year, 9 months ago

UP Board > Class 09 > Science

0 answers

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