Answered

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A ball is thrown 6m above the ground. Its total energy at that point is 12 J. What is the total energy of the ball at a halfway point of motion

Sagot :

Answer:

5.99 J

Explanation:

A ball is thrown 6m above the ground.

Its total energy at that point is 12 J.

The energy of the ball is given by :

E = mgh

Where

m is the mass of the ball

[tex]m=\dfrac{E}{gh}\\\\m=\dfrac{12}{9.8\times 6}\\\\m=0.204\ kg[/tex]

Let E' is the total energy of the ball at a halfway point of motion. h' = 3 m

So,

[tex]E'=mgh'\\\\E'=0.204\times 9.8\times 3\\\\E'=5.99\ J[/tex]

So, the required energy is 5.99 J.

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