activiaaaoliviaaa
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  • 24-02-2020
  • Physics
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A school bus weighing 1000 kg slows down from 15 m/s to a stop. What is the change in kinetic energy?

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opudodennis
opudodennis opudodennis
  • 26-02-2020

Answer:

112500 J

Explanation:

Kinetic energy, KE is given by

[tex]KE=0.5mv^{2}[/tex] where m is the mass of the school bus while v is the velocity

The change in kinetic energy is given by

[tex]0.5mv_f^{2}- 0.5mv_i^{2}[/tex] where the subscript f and i denote final and initial speeds

[tex]0.5*1000(0^{2}-15^{2})=-112500 J[/tex]

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