1) which of the following explains why a bicycle uses a gear?
a.)the gear increases the...
1) which of the following explains why a bicycle uses a gear?
a.)the gear increases the effort force needed.
b.)the gear increases resistance force.
c.)the gear decreases effort force.
d.)the gear decreases resistance force.
2) which of the following is a compound machine?
a.)a screw being screwed into a piece of wood
b.)a can opener
c.)a crowbar
d.)a wheel and axle
Answers: 1
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