Answered

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A bumper car with a mass of 150 kg is moving forward at 10m/s. It collides with a stationary bumper car with a mass of 209 kg. After the collision, the 200 kg bumper car moves forward at 8.0 m/s. Does the 150 bumper car continue to move forward or backward after the collision?

Sagot :

Given,

Mass of the bumper car is 150 kg.

It moves with a speed 10 m//s.

The mass of the stationary bumper car is 200 kg.

After collision,

The 200 kg bumper moves it a velocity of 8.0 m/s.

By conservation of mass,

[tex]\begin{gathered} 150\times10=200\times8+150v \\ \Rightarrow v=-0.66\text{ m/s} \end{gathered}[/tex]

Thus the 150 kg bumper car moves backward after collision.

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