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Problem: A 1000 kg aircraft going 25 m/s collides with a 1500 kg aircraft that is parked. They stick together after the collision and are going 10 m/s after the collision.
Part A: If they skid for 18.9seconds before stopping, how far did they skid?
I need expert help to solve the above question and hint: Are the aircraft moving at a constant velocity after the collision or do they experience acceleration?
Neutron stars, such as the one at the center of the Crab Nebula,have about the same mass as our sun, but a much smaller diameter. If you weigh 650 {\rm N} on the earth, what would you weight on the surface of a neutron star that has the same mass ..
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