GRAVITY is CENTRIPETAL FORCE that keeps planets in orbit
GRAVITY is the force of attraction between masses - larger the masses, greater the forces of attraction between them
GRAVITATIONAL FORCE can act as CENTRIPETAL FORCE that keeps on object in orbit around another - orbit is possible when there is a balance between the forward motion of the object and the gravitational force pulling it inwards.
- Planets always orbit around stars - stars provide centripetal force
- Orbits around Sun always slightly ELIPTICAL
- Further planet is from the Sun, longer the…