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Answered

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determine the kinetic energy of a 1000-kg rollor coaster car that is moving with the speed of 20.0 m/s​

Sagot :

Given :

Mass of roller coaster, m = 1000 kg.

Speed with which roller coaster is moving, v = 20.0 m/s.

To Find :

The kinetic energy if roller coaster.

Solution :

We know, kinetic energy of any object of mass m and speed v is given by :

[tex]K.E = \dfrac{mv^2}{2}\\\\K.E = \dfrac{1000\times 20^2}{2}\ J\\\\K.E = 200000\ J\\\\K.E = 200\ kJ[/tex]

Therefore, the kinetic energy of roller coaster is 200 kJ.

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