After he lets go of the cart, the spring pushes the cart and the cart rolls acro

Question

After he lets go of the cart, the spring pushes the cart and the cart rolls across the floor. Which of the following graphs could represent the potential energy of the spring and the kinetic energy of the cart when the cart is rolling across the floor and the spring is no longer in contact with the cart?

**Explain Choice without equations

The graph shows the amount of potential energy of the spring and kinetic energy of the cart when a student compresses a spring and holds a cart next to the spring. **Explain Choice without equations Graph D: Graph C: Graph B: After he lets go of the cart, the spring pushes the cart and the cart rolls across the floor. Which of the following graphs could represent the potential energy of the spring and the kinetic energy of the cart when the cart is rolling across the floor and the spring is no longer in contact with the cart? Graph A:

Explanation / Answer

The total potential energy stored in the spring is converted into kinetic energy when the spring losses contact with the cart. the correct graph for energies is graph (B).

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