Bumper car A(281 kg) moving + 2.82 m/s makes an elastic collision with bumper car B (209 kg) moving -1.72 m/s. . What is the velocity of car B after the collision ?

What is the magnitude of the resultant vector round your answer to the nearest tenth

Asap i'm in class rn a 1,000-kg car is traveling 20 m/s on a flat stretch of road. it gets to a hill and coasts uphill until it stops. how high up the hill does the car travel? givens: equation: 1/2mv2initial=mghfinal solve for h. plug & chug, label.

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 .