Car 1 weighs 3900kg and is Travelling at 30m/s East. Car 2 weighs 1890kg and is Travelling at 10 m/s West. They collide with each other. What is the final velocity of each car.

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anonymous · Answer

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johnweldon1993 · Answer

$$M_{car1} V_{car1(initially)} + M_{car2} V_{car2(initially)} = M_{car1} V_{car1(final)} + M_{car2} V_{car2(final)}$$

Since they collide with each other...their velocities are the same at the end so

$$M_{car1} V_{car1(initially)} + M_{car2} V_{car2(initially)} = (M_{car1}+ M_{car2}) V_{cars (final)}$$

You have Mcar1, Vcar1, Mcar2, Vcar2....so rearrange and solve for V_final

anonymous · Answer

no they don't have the same velocities at the end