A 4.00 kg ball traveling north with a momentum of 11.2 kg m/s collides with a 6.0 kg ball traveling West with a momentum of 18 kg m/s. The two balls stick together and head off as one. What is the momentum of the combined masses? What is the velocity of the combined masses?

Rubber on floor tile has a coefficient of kinetic friction of 1.0 and a coefficient of static friction of 2.0. how much force would a 3.5 lb. robot need to produce in order to start moving?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

What is the thinnest soap film (excluding the case of zero thickness) that appears black when illuminated with light with a wavelength of 480 ? the index of refraction of the film is 1.34, and there is air on both sides of the film. express your answer in nanometers. hint 1. how to approach th