Gravity

What causes planets to stay in their orbits?

Since we are measuring the gravitational FORCE of attraction, what is the unit for our final answer?

((6.67x10-11) (0.56) (0.56)) / 3^2

(7.83 N/kg) (80 kg) =?

Since we are trying to solve for the weight on earth, Do you remember the value of "g" on Earth?

(9.8m/s^2) (80 kg) =?

If you may recall, GPE is a type of energy. It shares a unit with Work and Kinetic Energy. What is their unit?

Test for understanding: What are the two factors causing planets to stay within their orbits?

How does gravity and inertia allow planets to stay within their orbits?

Since Escape VELOCITY measures how fast you must move to counteract the gravitational pull, what is the unit for it?

√(2(6.67x10 -11)(5.974x10 24))/6371000 = ?

If you are a believer of the GEOCENTRIC model, from the words GEO and CENTRIC, which do you think the center of the universe is?

If you are a believer of the HELIOCENTRIC model, from the words HELIO and CENTRIC, which do you think the center of the universe is?

Test for comprehension: Who are the two scientists attributed for the Laws of planetary motion?

___ is to close to the sun; as ___ is far from the sun

Let us consider MVEMJSUN as order of planets from the sun (left to right). Which has longer period, Mercury or Earth?

Let us consider MVEMJSUN as order of planets from the sun (left to right). Which has longer period, Uranus or Earth?

Let us consider MVEMJSUN as order of planets from the sun (left to right). Which has longer period, Saturn or Jupiter?

Let us consider MVEMJSUN as order of planets from the sun (left to right). Which has shorter period, Neptune or Venus?