Question

PLZ HELP I WILL GIVE YOU 30 POINTS

You are designing an experiment to test the efficiency of different bikes. What simple machines helped to make this complex machine?

wedge, pulley, and wheel and axle


wedge, screw and wheel and axle, inclined plane


screw, inclined plane and wheel and axle, pulley


screw, lever, and wheel and axle

Answer 1

C

Step-by-step explanation:

im doing the test

Answer 2

C

Step-by-step explanation:

you need a wheel And axle for the bike.

You need the pulley for the chain to pull the tires

you need the inclined plane to test the bike

you need a screw to make sure the wheel and axle is in place.