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If you punch a punching bag hard, has work been done?
5
mechanical efficiency of her bicycle
unbalanced forces
force
twice the work compared to Daniel
6.67 W
mechanical advantage
Yes, because the glove provided a force that moved the bag a distance
If an inclined plane had a length of 20m and a height of 5m, what would the mechanical advantage be?
5
mechanical efficiency of her bicycle
unbalanced forces
force
twice the work compared to Daniel
6.67 W
mechanical advantage
Yes, because the glove provided a force that moved the bag a distance
Daniel and Ryan both work at a car wash. It takes Daniel 20 minutes to wash a car and Ryan 10 min. Ryan has
5
mechanical efficiency of her bicycle
unbalanced forces
force
twice the work compared to Daniel
6.67 W
mechanical advantage
Yes, because the glove provided a force that moved the bag a distance
By oiling the gears on her bike, Rebecca decreases the friction between moving parts and therefore increases the
5
mechanical efficiency of her bicycle
unbalanced forces
force
twice the work compared to Daniel
6.67 W
mechanical advantage
Yes, because the glove provided a force that moved the bag a distance
The movement of an object is the result of
5
mechanical efficiency of her bicycle
unbalanced forces
force
twice the work compared to Daniel
6.67 W
mechanical advantage
Yes, because the glove provided a force that moved the bag a distance
In science, a push or a pull is called a
5
mechanical efficiency of her bicycle
unbalanced forces
force
twice the work compared to Daniel
6.67 W
mechanical advantage
Yes, because the glove provided a force that moved the bag a distance
It took Bradley 45s and 60N of force to move a sofa 5m into a moving truck. How much power did he exert?
5
mechanical efficiency of her bicycle
unbalanced forces
force
twice the work compared to Daniel
6.67 W
mechanical advantage
Yes, because the glove provided a force that moved the bag a distance
Finding the ratio of a machine's output force/input force gives you the machine\'s
5
mechanical efficiency of her bicycle
unbalanced forces
force
twice the work compared to Daniel
6.67 W
mechanical advantage
Yes, because the glove provided a force that moved the bag a distance
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