Motion and Gravity
Isaac Newton’s research on motion is closely related to his research and
findings of gravity. Isaac Newton calculated the force needed to hold the moon
in its orbit, as compared to force pulling an object to the ground. He also
calculated the centripetal force (moving towards the centre) needed to hold a
stone in a sling and discovered the relationship between the length of a pendulum and the time of its
swing. Newton identified that gravitation is the central force in controlling motion
in celestial bodies (celestial bodies- an object that exists).
Modern Physics is based on the findings of force and gravity by Isaac Newton. There are three fundamental laws that Isaac Newton theorised, still in used today. These are:
Newton's First Law of Motion: An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force. This law is often called the "Law of Inertia".
Modern Physics is based on the findings of force and gravity by Isaac Newton. There are three fundamental laws that Isaac Newton theorised, still in used today. These are:
Newton's First Law of Motion: An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force. This law is often called the "Law of Inertia".
Newton's Second Law of Motion: Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).
Newton's Third Law of Motion: For every action there is an equal and opposite re-action.