Help in part (c) Three carts of masses m1 = 5.50 kg, m2 = 8.50 kg, and m3 = 3.00

Question

Help in part (c)

Three carts of masses m1 = 5.50 kg, m2 = 8.50 kg, and m3 = 3.00 kg move on a frictionless, horizontal track with speeds of v1 = 7.00 m/s to the right, v2 = 3.00 m/s to the right, and v3 = 5.00 m/s to the left, as shown below. Velcro couplers make the carts stick together after colliding.

(a) Find the final velocity of the train of three carts.

magnitude is 2.88 m/s to the right

(b) Does your answer require that all the carts collide and stick together at the same moment?

NO, it doesnt.

(c) What if they collide in a different order??????

What would happen?

Explanation / Answer

in part (c) coefficient of restitution comes into play. Some of the energy is dissipated and the final velocity will change.

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