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Mrs. Waid drives her car up Route 8 at 80mph. If her car weighs 2500 lbs,
how much Kinetic energy does it have?

Respuesta :

Answer:

It have 1.359 joule kinetic energy.

Explanation:

  • Kinetic energy is defined as the energy of any object due to its state of motion.
  • Mathematically kinetic energy can be calculated as:

                                    K.E = [tex]\frac{1}{2}[/tex][tex]mv^{2}[/tex] ...........................equation 1

        where,

           m= mass of object

           v= velocity of that moving object

  • In the above problem;

                     mass= 2500 lbs = [tex]5511.56[/tex] kg.

                     velocity= 80mph= [tex]\frac{80}{60*60}[/tex] [tex]m/s[/tex] = [tex]0.0222[/tex] [tex]m/s[/tex].

  • Substituting the values in equation 1, we get;

                                    K.E= [tex]\frac{1}{2}[/tex] * [tex]5511.56[/tex] * [tex]0.0222^{2}[/tex]

                                   K.E= [tex]1.359 joule.[/tex]

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