Final answer:
A precise answer cannot be provided for the time and velocity of a ping pong ball reaching the surface of a swimming pool without considering buoyancy and fluid dynamics, which have significant effects on such a scenario.
Step-by-step explanation:
To find out how long it would take a ping pong ball to reach the surface of a swimming pool and the velocity right before it reaches the surface, we can apply the principles of physics. However, without considering the effects of buoyancy and fluid dynamics, which are complex and would significantly impact the results, providing an accurate answer is not feasible. Typically, these types of physics problems would involve calculations using buoyant forces, drag coefficients, and perhaps differential equations to take the changing velocity into account.
Because the question specifically asks to neglect effects from viscosity and does not provide enough information to accurately calculate the buoyant force or account for acceleration due to drag, a precise solution cannot be given. In a realistic scenario, the speed of the object through a fluid would not be constant due to these forces.