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satela [25.4K]
3 years ago
11

A 70 kg student stands on top of a 5.0 m platform diving board . how much gravitational potential energy does the student have?

Physics
1 answer:
Marianna [84]3 years ago
6 0

Answer:

a. P.E = 3430Joules.

b. Workdone = 3430Nm

Explanation:

<u>Given the following data;</u>

Mass = 70kg

Distance = 5m

We know that acceleration due to gravity is equal to 9.8m/s²

To find the potential energy;

Potential energy = mgh

P.E = 70*9.8*5

<em>P.E = 3430J</em>

b. To find the workdone;

Workdone = force * distance

But force = mass * acceleration

Force = 70*9.8

Force = 686 Newton.

Workdone = 686 * 5

<em>Workdone = 3430Nm</em>

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Answer:

option (B) decreases

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15. A volleyball player who weighs 650 Newtons jumps 0.500 meters vertically off the floor. What is her kinetic energy just befo
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Explanation:

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We also have equation of motion v² = u² + 2as

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Substituting

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