Question

In the previous question (question 4), cart B now has a mass double that of cart A when the collision occurs. After cart A hits cart B, which of the following will occur?

1) cart A stops and cart B moves forward
2) cart A continues forward with the same speed as cart B
3) cart A bounces backwards and cart B stays at rest
4) cart A bounces backwards and cart B moves forward

Answer 1

Based on conservation of momentum, if cart A half as massive as cart B, collides with cart B, cart A is likely to bounce backward while cart B may move forward or stay at rest, depending on initial conditions and the type of collision.

Step-by-step explanation:

When cart A, which has half the mass of cart B, collides with cart B, the outcome depends on whether the collision is elastic or inelastic. However, we can deduce some general outcomes based on momentum conservation principles. Since momentum is conserved, the total system momentum before the collision is equal to the total system momentum after the collision. For an elastic collision, kinetic energy is conserved, whereas, for an inelastic collision, the kinetic energy is not conserved.

For the given scenario, assuming an elastic collision and given that cart A has a velocity in the positive direction and cart B has twice the mass of cart A, several outcomes are possible:

• If cart B is initially at rest, cart A could bounce backward, transferring enough momentum to cart B to get it moving forward.
• If cart B is moving forward, cart A would still likely bounce backward after the collision, but cart B would continue to move forward at a reduced velocity due to the gain in momentum from cart A.

If it's an inelastic collision and the carts stick together, they'll move forward with a velocity that's less than the initial velocity of cart A due to the conservation of momentum, with cart B having double the mass of cart A.

Without specific details of the collision type or the initial velocity of cart B, we cannot determine which of the four listed outcomes would occur. However, options 1) and 2) are less likely if we assume that cart B starts at rest because cart A will lose some of its momentum to cart B. The most likely options, considering momentum transfer and mass difference, are 3) cart A bounces backwards and cart B stays at rest, or 4) cart A bounces backwards and cart B moves forward, depending on the initial condition of cart B and the type of collision.