Newton's First and Second Law

Newton's First Law

NEWTON'S FIRST LAW states that if there is NO RESULTANT force on an object and:

• the object is STATIONARY, it will REMAIN STATIONARY.
• the object is MOVING, the object continues to move at the SAME VELOCITY (same speed and direction).

 

 

Newton’s Second Law

NEWTON'S SECOND LAW states that if there IS a RESULTANT force on an object, the object will ACCELERATE with an ACCELERATION that is DIRECTLY PROPORTIONAL to its RESULTANT FORCE and INVERSELY PROPORTIONAL to its mass.

 The law can be summarised by the equation:

 

• F is the resultant force in newtons (N)
• m is the mass in kilograms (kg)
• a is the acceleration in metres per second squared (m/s²).