Respuesta :

AL2006

-- When he's at rest, his kinetic energy is zero.

-- When he reaches 6.5 m/s, his kinetic energy is . . .

KE = (1/2) (m) (v²)

KE = (34 kg) (42.25 m²/s²)

KE = 1,436.5 Joules

That's the amount of energy that has to come from somewhere, in order to boost him to that speed.

Cricetus

The Kinetic energy will be "1436.5 Joules".

Given values are:

Mass,

  • m = 68 kg

Speed,

  • v = m/s

As we know the formula,

→ [tex]Kinetic \ energy = \frac{1}{2}mv^2[/tex]

By substituting the given values, we get

→                           [tex]= \frac{1}{2} (68)(6.5)^2[/tex]

→                           [tex]= \frac{1}{2}\times 68\times 42.25[/tex]

→                           [tex]= 34\times 42.25[/tex]

→                           [tex]= 1436.5 \ Joules[/tex]

Thus the above answer is appropriate.

Learn more about K.E here:

https://brainly.com/question/8168245

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