Question 1 (6 points) A car of mass 1000 kg is heading east at 25 m/s. It collides with a car of mass 1200 kg heading north at 30 m/s. When the cars collide, they stick together.' a. What is the total momentum of the system before the collision? Remember that momentum is a vector quantity, and write the momentum in component notation, with , and y unit vectors. (1 point)
b. What is the total momentum of the system after the collision? Write the momentum in component notation, with x and y unit vectors. (1 point)
c. What is the velocity of the cars after the collision? Write the velocity in component notation, with and y unit vectors. (2 points)
d. At what angle do the cars move after the collision? (2 points)

What are the north and south poles of a solenoid change with?

Which planet do you think would be easiest for humans to colonize some day?

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.