vlonekaratachi vlonekaratachi

24-05-2021
Physics

contestada

What is the mass of an object with 15,000 J of kinetic energy moving at 20 m/s?

Respuesta :

bigyatakhadka bigyatakhadka

24-05-2021

Answer:

kE=1/2mv^2

Explanation:

here

KE= 15000j

velocity =20m/s

mass=?

now

mass=

15000×2= (m)20^2

30000=m ×400

30000÷400=m

Mass (m)= 75

therefore mass is 75kilogram

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