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Chapter 1: Q19DQ (page 263)

An egg is released from rest from the roof of a building and falls to the ground. As the egg falls, what happens to the momentum of the system of the egg plus the earth?

Short Answer

Expert verified

Since no external force is acting on the system, so the momentum of the system remains constant or conserved.

Step by step solution

01

Conservation of momentum:

According to the conservation of momentum

If the net external force on a system is zero, the total momentum of the systemP→ (the vector sum of the momentum of the individual particles that make up the system) isconserved and each component of total momentum is separately conserved.

If∑F→=0

Then

P→= constant.

02

Discussion.

Since egg plus earth is a system, therefore the gravitational forces coming from egg and earth are internal forces.

Since no external force is acting on the system, therefore according to the conservation of momentum total momentum of the system is constant or conserved.

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