AST101H1 Chapter Notes - Chapter 4: Escape Velocity, Net Force, The Moons

• School: UTSG
• Department: Astronomy & Astrophysics
• Course: AST101H1
• Professor: Michael Reid

Document Summary

Gravity and kepler"s laws + tides, earth-moon interactions. State newton"s three laws of motion and apply them in the case of objects moving under gravity. Apply the concepts of conservation of energy and momentum to determine how the temperatures and rotation rates of celestial objects change when their sizes change. Describe how the force of gravity between two objects depends on their masses and the distance between them. Explain the concept of escape speed and describe how the escape speed of a body depends on the properties of that body. List the four possible shapes for orbits and relate them to the escape speed and circular speed copernicus, kepler, and galileo motion diagrams. Momentum: mass x velocity: only way to change momentum is to apply force to it. Weight: force that a scale measures (depends on mass and gravity acting on it)