Answer: The mass of the car is 2800 kg
Explanation:
Kinetic energy is defined as the energy which is possessed due to its motion.
It is also defined as the half of the product of mass of the object and square of the velocity of the object.
Mathematically,
[tex]E_K=\frac{1}{2}mv^2[/tex]
where,
[tex]E_K[/tex] = kinetic energy of car = 5,040,000 J
m = mass of the car = ? kg
v = velocity of car = 60 m/s
Putting values in above equation, we get:
[tex]5,040,000J=\frac{1}{2}\times m\times (60)^2\\\\m=\frac{5,040,000\times 2}{60\times 60}=2800kg[/tex]
Hence, the mass of the car is 2800 kg
