Question

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

Answer 1

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