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HANIASARIP4IN
Answered

if no force is required to stay in motion , then why do birds have to flap their wings when they fly ?​

Sagot :

YLHSANICOLEIN

Explanation:

The wings are held out to the side of the body and do not flap. As the wings move through the air, they are held at a slight angle, which deflects the air downwards and causes a reaction in the opposite direction, which is lift

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