Cart a, with a mass of 0.2 kg, travels on a horizontal air track at 3 m/s and hits cart b, which has a mass of 0.4 kg and is initially at rest. after the collision the center of mass of the two cart system has a speed in m/s of: 0 m/s 1.0 m/s 2.3 m/s 2.5 m/s 5.0 m/s

Who was the first scientist to measure speed as distance over time?

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

Wave functions describe orbitals in a hydrogen atom. each function is characterized by 3 quantum numbers: n, l, and ml. if the value of n = 2: the quantum number l can have values from to . the total number of orbitals possible at the n = 2 energy level is .