Gravitational potential energy homework

In summary, the gravitational potential energy of the 65 kg diver standing on a 10.0 m diving platform is 6370 Joules or 6.37 kilojoules. To calculate the diver's speed just as she strikes the water, one can use conservation of energy and the equation for kinetic energy. The speed of the diver is directly related to her kinetic energy.
  • #1
rhxoehwhfh
91
0
A 65 kg diver is standing on a diving platform 10.0 m above the water. What is the gravitational potential energy of the diver with respect to the water’s surface?

I know this one,,,
Ep = mgh
e= 65*10* 9.8
= 6370 Joules
or 6.37 kilojoules

If the diver in question 6 falls from the diving platform, what is her speed just as she strikes the water?

but I don't know how to calculate this one...
 
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  • #2
Use conservation of energy. What's kinetic energy?
 
  • #3
does speed of the diver have something to do with kinetic energy?
 
  • #4
rhxoehwhfh said:
does speed of the diver have something to do with kinetic energy?

Yes. Perhaps you should look it up.
 
  • #5
Yep , you were right
 
  • #6
Can you work it out now?
 

Related to Gravitational potential energy homework

What is gravitational potential energy?

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field. It is the potential for an object to gain kinetic energy when it falls or moves towards a lower point in the field.

How is gravitational potential energy calculated?

Gravitational potential energy can be calculated using the formula U = mgh, where U is the potential energy, m is the mass of the object, g is the acceleration due to gravity, and h is the height of the object above ground level.

What factors affect gravitational potential energy?

The two main factors that affect gravitational potential energy are the mass of the object and its distance from the source of the gravitational field. The higher the mass and the greater the distance, the higher the potential energy.

What is the relationship between gravitational potential energy and kinetic energy?

Gravitational potential energy and kinetic energy are two forms of energy that are related to each other. As an object falls, its potential energy decreases while its kinetic energy increases. At the bottom of its fall, all of the potential energy is converted into kinetic energy.

How is gravitational potential energy used in real life?

Gravitational potential energy is used in many aspects of our daily lives. For example, it is used in hydroelectric power plants to generate electricity from water falling from a height. It is also used in roller coasters, where the potential energy at the top of the track is converted into kinetic energy as the coaster moves downhill.

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