AST101H1 Chapter Notes - Chapter 4: Escape Velocity, Orbital Speed, 3E
21 Oct 2017
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AST101H1 Full Course Notes
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Presented the idea of force and the laws of motion. The rules that govern the motion in the heavens should also apply to earth . E. g. the car is going due north at 60 km/hour. Acceleration: the rate of change of velocity (speed or direction, or both) E. g. the car is changing speed from 0 km/h to 100 km/h in 9s. The car changed from going due north at 60 km/h to going due east at 60 km/h in 20s. Angular momentum: mass times velocity times distance (cid:1865)(cid:1870) If you add up the angular momentum of everything in a closed system you will find that no matter what happens, this momentum is conserved. There is a force between any two objects in the universe. The force depends on the m1 times m2. If you double the mass of either object, you double the force. If you half the mass of either object, you half the force.
