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a cart of mass m traveling on a horizontal air track with a speed of ov...

a cart of mass m traveling on a horizontal air track with a speed of ov vo=5.0 m/s collides with a stationary cart of mass 3m. the carts stick together after the collision. What is the speed of the carts after the collision?

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Answer #1

Let the speed of the carts after the collision is v.

The initial speed of the cart with mass m is vo=5.0 m/s.

The speed of the cart with mass 3m is u=0 m/s.

We know from the conservation of energy

  

  

  

The speed of the carts after the collision is 1.25 m/s.

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