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If two objects do the same amount of work, but one does it in less time.
no
yes
25.9 %
Power
The faster one has more power.
380 J
force ·distance
do 1 J of work in 1 s.
When you hold something, are you doing work?
no
yes
25.9 %
Power
The faster one has more power.
380 J
force ·distance
do 1 J of work in 1 s.
When you hold something, are you exerting a force on the object?
no
yes
25.9 %
Power
The faster one has more power.
380 J
force ·distance
do 1 J of work in 1 s.
____the rate at which work is done.
no
yes
25.9 %
Power
The faster one has more power.
380 J
force ·distance
do 1 J of work in 1 s.
A father lifts his daughter repeatedly in the air. How much work does he do with each lift, assuming he lifts her 2.0 m and exerts an average force of 190 N?
no
yes
25.9 %
Power
The faster one has more power.
380 J
force ·distance
do 1 J of work in 1 s.
What is the efficiency of a machine if 55.3 J of work are done on the machine, but only 14.3 J of work are done by the machine?
no
yes
25.9 %
Power
The faster one has more power.
380 J
force ·distance
do 1 J of work in 1 s.
A watt is the amount of power required to
no
yes
25.9 %
Power
The faster one has more power.
380 J
force ·distance
do 1 J of work in 1 s.
Work =
no
yes
25.9 %
Power
The faster one has more power.
380 J
force ·distance
do 1 J of work in 1 s.
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Match it!
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