A 57 kg diver jumps off a 10-meter-high platform. What is the average power exerted by gravity during the 1.5 seconds it takes to fall?
Options
A
3800 W
B
1000 W
C
570 W
D
5700 W
Answer & Analysis
Answer
A
Analysis
To calculate the average power exerted by
gravity, we need to follow these steps:
Calculate the work done by gravity
The work done by gravity is equal to the
change in gravitational potential energy as the diver falls. The formula for
gravitational potential energy is:
Where:
is the mass of the
diver,
is the
acceleration due to gravity,
is the height from
which the diver falls.
Substitute the values:
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