Answer:
490,400 J
Explanation:
Mass of first car, m = 1000 kg
Mass of second car, M = 1200 kg
velocity of first car, u = 20 m/s east
velocity of second car, U = 22 m/s west
The formula for the kinetic energy is
[tex]k = \frac{1}{2}mv^{2}[/tex]
where, m is the body and v be the velocity of the body.
Total kinetic energy is given by
[tex]k = \frac{1}{2}mu^{2}+\frac{1}{2}MU^{2}[/tex]
[tex]k = \frac{1}{2}\times1000\times20^{2}+\frac{1}{2}\times1200\times22^{2}[/tex]
[tex]k = 200000 + 290400[/tex]
k = 490,400 J
Thus, the total kinetic energy of the system is 490,400 J.
