Answer:
[tex]6.3 \cdot 10^5 J[/tex]
Explanation:
The kinetic energy of an object is given by
[tex]K=\frac{1}{2}mv^2[/tex]
where
m is the mass of the object
v is its speed
For the car in this problem,
m = 1400 kg
v = 30 m/s
Therefore, the kinetic energy of the car is
[tex]K=\frac{1}{2}(1400)(30)^2=6.3 \cdot 10^5 J[/tex]
