Wednesday
March 4, 2015

Homework Help: physics

Posted by ayla on Tuesday, October 4, 2011 at 12:07pm.

A 29 kg child, with a 4.5 kg backpack on his back, first stands on a sidewalk and then jumps up into the air. Find the magnitude and direction of the force on the sidewalk from the child when the child is (a) standing still and (b) in the air. Now find the magnitude and direction of the net force on Earth due to the child when the child is (c) standing still and (d) in the air.

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