Will give brainlist pl answer ! the force that gravity exerts on an object is called (1 point)
a.)mass
b.)weight
c.) density
d.)volume
2. what is the shape of a planet’s orbit? (1 point)
a.)elliptical
b.)circular
c.) irregular
d.) parabolic
3. which law states that each planet revolves so that an imaginary line connecting it to the sun sweeps over equal areas in equal time intervals? (1 point)
a.) the first law of planetary motion
b.) the second law of planetary motion
c.)the third law of planetary motion
d.) the law of universal gravitation 4.
which scientist determined the nature of the forces that keep the planets in their orbits? (1 point)
a.) copernicus
b.)galileo
c.)brahe
d.) newton