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Classical Mechanics

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Airplane Forces

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A jet plane's flight is determined by several forces. Lift pushes the plane up, weight pulls it down, thrust pushes it forward, and drag pushes it back.

Which of the following statements is true about an aircraft climbing at constant speed?

A

Lift is greater than weight.

B

Thrust is greater than weight.

C

Lift is equal to drag.

D

Lift is equal to weight.