Assignment:
1. Marble A is rolling directly towards Marble B and they undergo an elastic collision. Marble A has a mass that is two times the mass of Marble B or ???? = 2????. The initial velocity of Marble A is ?????? = 30 ??/?? and the initial velocity of Marble B is 0 m/s. Remembering that Kinetic Energy and Momentum is conserved in an elastic collision, find the final velocity of Marble A.
2. A car is heading east at 80 miles per hour when it collides with a large swarm of mosquitos of mass ???? = 5????. Afterwards, the car and mosquito swarm final speed is now 79.85 miles per hour. If the swarm of mosquitos were flying in the air such that their initial speed is negligible, what is the mass of the car?
3. A pool ball (B1) of mass ????1 = 30???? rolls towards a stationary ball (B2) of mass ????2 = 50????. The initial velocity of B1 is ????1?? = 40 ??/?? . The momentum from moving ball is transferred to the stationary ball such that the final velocity of B1 is 10 m/s. Find the final velocity of B2.
4. Write the equations the general equations for an inelastic collision and an elastic collision. In which of the two is momentum conserved? In which of the two is kinetic energy conserved?