Wednesday
April 16, 2014

Homework Help: physics

Posted by Melissa on Wednesday, April 25, 2012 at 3:00pm.

A 60 kg student does 60 push ups in 40s . With each push up , the student must lift 70% of the body mass a height of 40cm off the floor. Assuming two significant digits, calculate the following

The work the student does against a force of gravity for each push up , assuming work is done only when the student pushes up

The total work done against the force of gravity in 40s

The power achieved for this period

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