DO NOW 74

Front

What is the centripetal force that holds planets in orbit?

Back

Gravitational force is the force that attracts two bodies towards each other, keeping planets in orbit around stars.

Front

Define inertia in the context of motion.

Back

Inertia is the tendency of an object to resist changes in its state of motion; an object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is Kepler's First Law of Planetary Motion?

Back

Kepler's First Law states that planets move in elliptical orbits with the Sun at one of the foci.

Front

Explain the concept of gravitational force.

Back

Gravitational force is a natural phenomenon by which all things with mass are brought toward one another, proportional to their masses and inversely proportional to the square of the distance between their centers.

Front

What is the formula for calculating gravitational force?

Back

The formula for gravitational force (F) is F = G * (m1 * m2) / r^2, where G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between their centers.

Front

What role does gravitational force play in the solar system?

Back

Gravitational force governs the motion of celestial bodies, keeping planets in orbit around the Sun and moons in orbit around planets.

Front

Define the term 'orbital velocity'.

Back

Orbital velocity is the speed at which an object must travel to maintain a stable orbit around a celestial body, dependent on the mass of the body and the distance from its center.

Front

What is the relationship between mass and gravitational force?

Back

The gravitational force between two objects increases with the mass of either object; more massive objects exert a stronger gravitational pull.

Front

Explain the concept of escape velocity.

Back

Escape velocity is the minimum speed needed for an object to break free from the gravitational attraction of a celestial body without further propulsion.

Front

What is the significance of Newton's Law of Universal Gravitation?

Back

Newton's Law of Universal Gravitation describes the gravitational attraction between two masses and provides a mathematical framework for understanding the motion of celestial bodies.