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A student drops a bag of mass m onto a cart of mass M that is sliding with speed vo along a horizontal track with negligible friction. Immediately after the bag lands in the cart, the cart-bag system moves with speed uf. Which of the following statements correctly relates the two speeds and gives a correct reason for this relationship?
A. vf B. Uf 00, because the kinetic energy of the bag decreases.
C. Uf > Vo, because the linear momentum of the bag is added to the linear momentum of the cart.
D. Uf = vo, because the bag is moving perpendicular to the cart.

Sagot :

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When the bag lands on the cart, it follows that vf < vo given the fact that some mechanical energy is now lost by the system.

What is friction?

The term friction refers to the force that opposes motion. The direction of the frictional force is opposite to the force that causes motion.

When the bag lands on the cart, it follows that vf < vo given the fact that some mechanical energy is now lost by the system. Note that the potential energy of the bag is converted to kinetic energy.

Learn more about kinetic energy: https://brainly.com/question/999862?

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