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May 22, 2015

Homework Help: physics ( please help me)

Posted by taylor on Tuesday, April 3, 2012 at 3:48pm.

a railroad handcar is moving along striaght, fricionless tracks. In each of the following cases the car initially has a total mass (car and contents of magniude 4.00 m/s^1. Find the final velocity of the car in each of the three cases.

A) a 40.0 kg mass is thown sideways out of the car with a velocity of magnitude 2.00 m/s^1 relative to the car.
B) a 40.0 kg mass is thrown backward (to the west)out of the car with a velocity of magnitude 4.00 m/s^1 relative to the initial motion of the car.
C) a 40.0 kg mass is thrown into the car with a velocity of the magnitude 6.00 m/s^1 relative to the ground and opposite in direction to the velocity of the car.

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