Physics 121- Quiz 4 and answers
verified to pass 2025
According to Newton's Second Law, in a two object system (e.g. star & planet,
or truck & person), the force on the smaller object is _______ the force on the
larger object. - correct answer ✔equal to
The reaction force to the Earth pulling on you is - correct answer ✔the force
of you pulling up on the Earth
Kepler determined that the planets orbit the Sun in ellipses with the Sun
located - correct answer ✔at one focus
A direct result of Kepler's 2nd Law is - correct answer ✔that planets move
slower when far from the sun
The relationship between the distance of a planet from the Sun and its orbital
period is given by - correct answer ✔Kepler's 3rd Law
If the distance between a star and a planet was suddenly cut in half, the
attractive gravitational force would ___. - correct answer ✔quadruple
The constant "G" is necessary to make Newton's Law of Gravity produce an
answer with the correct units. - correct answer ✔True
Both Newton's and Kepler's Laws allows us to: - correct answer ✔Predict the
behavior of bodies, compactly express relationships with words or equations
and calculate quantities within the laws, given the other quantities
verified to pass 2025
According to Newton's Second Law, in a two object system (e.g. star & planet,
or truck & person), the force on the smaller object is _______ the force on the
larger object. - correct answer ✔equal to
The reaction force to the Earth pulling on you is - correct answer ✔the force
of you pulling up on the Earth
Kepler determined that the planets orbit the Sun in ellipses with the Sun
located - correct answer ✔at one focus
A direct result of Kepler's 2nd Law is - correct answer ✔that planets move
slower when far from the sun
The relationship between the distance of a planet from the Sun and its orbital
period is given by - correct answer ✔Kepler's 3rd Law
If the distance between a star and a planet was suddenly cut in half, the
attractive gravitational force would ___. - correct answer ✔quadruple
The constant "G" is necessary to make Newton's Law of Gravity produce an
answer with the correct units. - correct answer ✔True
Both Newton's and Kepler's Laws allows us to: - correct answer ✔Predict the
behavior of bodies, compactly express relationships with words or equations
and calculate quantities within the laws, given the other quantities
