posted by kb .
A mine car, whose mass is 590 kg, rolls at a speed of 0.5 m/s on a horizontal track, as the drawing shows. A 150 kg chunk of coal has a speed of 0.95 m/s when it leaves the chute. Determine the velocity of the car/coal system after the coal has come to rest in the car.
mass of cart (velocity of cart) + mass of car(velocity of car) = (total mass)velocity
solve for "velocity"