A 2kg ball traveling to the right with a speed of 4 ms, Ask an Expert

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Q. A satellite has a mass of 6448 kg and is in a circular orbit 4.83 × 105 m above the surface of a planet. The period of the orbit is 2.4 hours. The radius of the planet is 4.41 × 106 m. What would be the true weight of the satellite if it were at rest on the planet's surface?

Q. A 2-kg ball traveling to the right with a speed of 4 m/s collides with a 4-kg ball traveling to the left with a speed of 2 m/s. The total momentum of the two balls after the collision is what?

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