A carpenter leaves several tools on the floor of his workshop when he goes for his lunch break. Sometime later the carpenter returns and sees that one of his coworkers has moved his tools to different shelves on a nearby bookshelf.
Which data would the carpenter need to collect to calculate the amount of work required to lift his tools onto the shelves?
(Choose the correct answers, there is more than one answer)
the height of each shelf
the time it took to move each tool
the amount of force needed to lift each tool
the strength of the person who moved the tools
Answers: 2
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Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?
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A carpenter leaves several tools on the floor of his workshop when he goes for his lunch break. Some...
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