Newtons Laws of Motion Flashcards
What do we mean by inertia?
The tendency of an object to remain in a steady state (at rest or in uniform motion)
Newton’s first law
The velocity of an object will only change if a resultant force is acting on it
What is the resultant force on a stationary object?
Zero
What will an object experience if the resultant force on it is not zero?
Acceleration/change in velocity
What is the name of the tendency of an object to remain in a steady state at rest or moving in a straight line at a constant speed?
Inertia
What forces are balanced when an object travels at a steady speed?
Resistive forces = driving force
According to Newton’s Second Law, what is the acceleration of an object proportional to?
The force acting on it
According to Newton’s Second Law, what is the acceleration of an object inversely proportional to?
Mass
What is the inertial mass of an object?
How difficult it is to change an object’s velocity
Newton’s Third Law
When two objects interact they exert equal and opposite forces on each other
Starting to move, stopping moving, speeding up, slowing down and changing directions are all examples of which physical process?
Acceleration/change in velocity
