Physical Science, module 11 Flashcards
Define “centripetal force”.
Force that is always directed perpendicular to the velocity of an object.
What force is required for circular motion?
Centripetal force.
What are the 3 parts of a comet?
The nucleus, the coma, and the tail.
Where do physicists think that short-term comets come from?
From the Kuiper belt.
Name the 3 principles of Newton’s Universal law of gravitation.
1: all objects with mass are attracted to one another by the gravitational force.
2: The gravitational force between two masses is directly proportional to the mass of each object.
3: The gravitational force between two masses is inversely proportional to the square of the distance between those objects.
When the centripetal force acting on an object is increased, the speed of the object is ________.
Increased.
When the centripetal force acting on an object is increased, the circle of motion is ________.
Decreased.
