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PLEASE HELP!!

Identify how each machine changes the way work is done so as to
be useful.

Bicycle

Ax blade

Car jack

PLEASE HELP Identify how each machine changes the way work is done so as to be useful Bicycle Ax blade Car jack class=

Respuesta :

You use energy from your body and press the pedals on the bike that has chains and the chains are connected to a circular ish shape and is also connected to the wheel and it spins

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