Newtons Laws Of Motion Flashcards
What is Newton’s first law
Objects either stay at rest or moves with constant velocity unless acted on by a force
What 2 states can Newton’s first law represent
Acted on by no force
Acted on by balanced opposing forces
What is Newton’s second law
Force (F) is proportional to Mass (m) X Acceleration (a)
Equation and units for Newton’s second law
F (N)= Mass (Kg) X Acceleration (ms^-2)
What is weight
The acceleration of a falling object acted on by gravity
What is the equation for weight
Weight = mass x acceleration due to gravity
What is mass
It is a measure of an objects inertia
What is inertia
A measure of how resistant to a change of motion an object is
What is a resultant force
The sum of all forces acting on an object
What is the equation for a rockets thrust
Thrust = mg + ma
What equation is used for sliding down a slope
mg sinx -friction on the block= ma
What is terminal speed
When drag forces is equal and opposite to its weight
What device Is used to measure terminal speed
Tape chart
Equation of acceleration (vertical) factoring in terminal speed
mg - drag / m
What is motive force
Force provided by engine (driving force)
Equation for motion of a powered vehicle
Acceleration= force (engine) - force (resistive) / mass
