Cart A of mass 514 grams moves at a speed O.65m/s, and collides with Cart B of m

Question

Cart A of mass 514 grams moves at a speed O.65m/s, and collides with Cart B of mass 472 grams, which is initially stationary. After collision, both carts become stuck together, what is their speed (in unit of m/s)? Consider an object in uniform circular motion. Since p = mv, the object's linear momentum does not change. True False In this lab, the track must be tilted to balance friction force because______. friction force is a nonconservative force. unbalanced friction forces violet the condition of momentum conservation that the net external forces must be zero. unbalanced friction forces violet the condition of energy conservation that the net external forces must be zero.

Explanation / Answer

from conservation of momentum

Pi = Pf

m1v2 + m2v2 = (m2 + m2)v

0.514 x 0.65 + 0.472 x 0 = (0.514 + 0.472)v

v = 0.34 m/s

Hence, velocity of both the carts = v = 0.34 m/s

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