Final answer:
Without additional details about the nature of the collision and other external factors, we cannot determine the exact magnitude of the velocity of the baseball post-collision. For precise calculations, information on whether the collision is elastic or inelastic and data on external forces would be necessary.
Step-by-step explanation:
To determine the magnitude of the velocity of the baseball immediately following the collision with a bat, we would typically use the principle of conservation of momentum, provided that the collision is elastic and no external forces are acting on the bat-ball system (other than gravity, which affects both objects similarly and can be ignored for horizontal velocities). To solve the collision problem, you'd need to know whether additional external factors, like friction or air resistance, play a significant role, and whether it is an elastic or inelastic collision. However, without further information about these factors, it's not possible to provide a precise numerical solution to this problem.
In a perfectly elastic collision, where kinetic energy is also conserved, the final velocities can be determined using the conservation of kinetic energy in addition to the conservation of momentum. On the other hand, an inelastic collision does not conserve kinetic energy, and more data is needed to find the final velocities.
In the context of the example where a 150-g baseball experiences an average force of 480 N and changes its velocity, we can calculate the resultant velocity by using the impulse-momentum theorem where impulse is equal to the change in momentum of the system. This is calculated by multiplying the force by the time the force acts. The calculations involve converting units where necessary and solving for the final velocity.