The Laws of Physics

Question 1

Newton’s First Law of Motion states that…

Answer 1

An object will remain at rest or move at uniform velocity unless acted on by an external force.

Question 2

Newton’s Second Law of Motion states that…

Answer 2

The rate of change of momentum is directly proportional to the force and acts in the direction of the applied force.

Question 3

Newton’s Third Law of Motion states that…

Answer 3

For every action there is a reaction of equal magnitude but in the opposite direction.

Question 4

Kepler’s First Law states that…

Answer 4

All planets move in elliptical orbits with the Sun at one focus. (Law of Orbits)

Question 5

Kepler’s Second Law states that…

Answer 5

A line that connects a planet to the Sun sweeps out equal areas in equal times. (Law of Areas)

Question 6

Kepler’s Third Law states that…

Answer 6

The square of the orbital period of any planet is directly proportional to the cube of the radius of its orbit. (Law of Periods)