Your Younger Brother Is Supposed to Mow the Lawn Using

question 57

Essay

Your younger brother is supposed to mow the lawn using a push mower.He reasons from Newton's Third Law that the mower will push back with the same force he exerts on the mower;therefore nothing will move and attempting to mow the lawn is pointless.What is wrong with his reasoning?

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Definitions:

Shale

A fine-grained sedimentary rock that can contain significant amounts of oil and natural gas.

Magnitude 9.0

A measure on the Richter scale indicating an extremely powerful earthquake, capable of causing widespread destruction and significant alteration of the Earth's surface.

Lava Rock

A volcanic rock formed from the cooling and solidification of molten lava.

Igneous

Pertaining to rock formed from the cooling and solidification of magma or lava, distinguished by minerals crystallized from molten material.