A boxcar of length 9.9 m and height 2.4 m is at rest on frictionless rails. Insi

Question

A boxcar of length 9.9 m and height 2.4 m is at rest on frictionless rails. Inside the boxcar (whose mass when empty is 2800 Kg) a tank containing 2000 Kg of water is located at the left end. The tank is 1.1 m long and 2.4 m tall. At some point the walls of the tank start to leak, and the water fills the floor of the boxcar uniformly. Assume that all the water stays in the boxcar. After all the water has leaked out what will be the final velocity of the boxcar? (Take movement to the right as positive. Assume that the mass of the boxcar is evenly distributed.) 0.0000 m/s You are correct. Previous Tries Your receipt no. is 150-8026 What is the displacement of the boxcar 10 S after the water has settled in the bottom. (Take positive displacement as being to the right.) 0.614 m Submit AnswerIncorrect. Tries 5/8 Previous Tries

Explanation / Answer

As there is uniform distribution of mass of water, there are no unbalanced forces in the boxcar and hence it does not accelerate and stays at rest. Its velocity will be zero at all points.

V = 0.0 m/s

And hence, its displacement d = 0.0 m

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