norinovitale23 norinovitale23

11-03-2021
Physics

contestada

1200kg car speeds up from 2 m/s to 6 m/s. How many times greater is the car's kinetic
energy at the higher speed compared to the kinetic energy at the slower speed?

Respuesta :

FulcrumAhsoka FulcrumAhsoka

11-03-2021

Answer:

9 times as great

Explanation:

KE = 1/2mv²

1/2(1200)(2)² = 2,400 J
1/2(1200)(6)² = 21,600 J

21,600 / 2,400 = 9

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