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September 3, 2014

Homework Help: physics

Posted by shaknocka on Monday, February 28, 2011 at 11:25am.

An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 4.9 104 kg, and the force causes its speed to change from 7600 to 5400 m/s. (a) What is the work done by the force? (b) If the asteroid slows down over a distance of 1.9 106 m determine the magnitude of the force.



i found the work is -7.007E11 but i cant find part b) magnitude of the force

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