Respuesta :

Given:

The mass of the locomotive is m1 = 110000 kg

The initial speed of the locomotive is

[tex]v_{initial}=\text{ 1 m/s}[/tex]

The mass of the rail car is m2 = 25000 kg

The initial speed of the rail car is zero.

The radius of the wheel is r = 0.48 m

To find

The final velocity of the locomotive and the car.

The angular velocity after collision.

Explanation:

The final velocity can be calculated as

[tex]\begin{gathered} m1v_{initial}+m2\times0=(m1+m2)v_{final} \\ v_{final}=\frac{m1v_{initial}}{m1+m2} \\ =\frac{110000\times1}{110000+25000} \\ =\text{ 0.82 m/s} \end{gathered}[/tex]

The angular velocity after the collision can be calculated as

[tex]\begin{gathered} \omega=\frac{v_{final}}{r} \\ =\frac{0.82}{0.48} \\ =1.7\text{ rad/s} \end{gathered}[/tex]

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