Answer Happy

Problem 1 (30 points) Consider two objects of masses m = 7.542 kg and m2 = 0.8563 kg. The first mass (m) is traveling along the negative y-axis at 45. 12 km/hr and strikes the second stationary mass m2, locking the two masses together. a) (5 Points) What is the velocity of the first mass before the collision? m/s b) (3 Points) What is the velocity of the second mass before the collision? Vm2=< > m/s c) (1 Point) The final velocity of the two masses can be calculated using the formula number: (Note: use the formula-sheet given in the introduction section) Tmi d) (5 Points) What is the final velocity of the two masses? > m/s e) (4 Points) Choose the correct answer: . f) (4 Points) What is the total initial kinetic energy of the two masses? Ki= J g) (5 Points) What is the total final kinetic energy of the two masses? KA J h)(3 Points) How much of the mechanical energy is lost due to this collision? AEint-

Question 9 Not yet answered Marked out of 5.00 Flag question (5 points) A 2200 kg car traveling at 30 m/s collides with another 2200 kg car that is at rest. The two bumpers lock and the cars move forward together. What is their final velocity? O a. 0 m/s ob. 30 m/s O c. 15 m/s d. 10 m/s Question 10 Not yet answered Marked out of 5.00 P Flag question (5 points) A 1000-kg car traveling initially with a speed of 20 m/s in an eastern direction crashes into the rear end of 2000-kg truck moving in the same direction with a speed of 10 m/s. The velocity of the car right after the collision is 15 m/s to the east. What is the velocity of the truck after the collision? a. 12.5 m/s O b. 7.5 m/s O c.0 m/s d. 2.5 m/s