jay123960 jay123960

16-12-2019
Physics

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a car has a kinetic energy of 5.32*10^5 j when traveling at a speed of 20 m/s what is its mass

Respuesta :

Stefanisaska Stefanisaska

18-12-2019

Answer: Mass of car is 2660kg

Explanation:

Use equation for Kinetic ene)rgy :

Ek=(m*V²)/2

from this eqation you can get mass

m*V²=Ek*2

m=Ek*2/v²

Ek=5.32*100000J

V=20m/s

m=?

m=2*5.32*100000J/(20m/s)²

m=2660kg or 2.66t

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