A giant \"egg\" explodes as part of a fireworks display. The egg is at rest befo

Question

A giant "egg" explodes as part of a fireworks display. The egg is at rest before the explosion, and after the explosion, it breaks into two pieces, with the masses indicated in the diagram, traveling in opposite directions. (Figure 1) What is the momentum p A,i of piece A before the explosion? Express your answer numerically in kilogram meters per second. During the explosion, is the force of piece A on piece B greater than, less than, or equal to the force of piece B on piece A? The momentum of piece B is measured to be 500 kg . m/s after the explosion. Find the momentum p A,f of piece A after the explosion. Enter your answer numerically in kilogram meters per second.

Explanation / Answer

A)ZERO since initially it was at rest<br/>

B)EQUAL ,sinceAccording to newton's third law both forces are equal in magnitude but in apposite direction.<br/>

C)P(final)=P(initial)<br/>

=>p(30 kg)+p(10 kg) =p(full egg)=0<br/>

=>500 + p(10 kg) = 0<br/>

=>p(10 kg ) = -500 kg-m/sec<br/>

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