Physics Flashcards
Vector
A quantity that has both direction and magnitude (OH YEAH!!!)
Scalar
A quantity that has magnitude but not direction (OH NO!!!)
Distance
How far something has travelled
Displacement
How far away something is from a certain location (as the crow flies. WHEEEEE!)
Driving force
force of a vehicle that makes it move (sometimes referred to as motive force) (VROOM!!)
Forces
a force (in newtons, N) can change the motion of an object
Free-body force diagram
a diagram that shows the forces acting on an object without any other objects or forces shown
Friction
the force opposing the relative motion of two solid surfaces in contact (Trying to stick!)
Magnitude
the size or amount of a physical quantity (MORE!!!)
Newton’s first law of motion
if the resultant force on an object is zero, the object stays at rest if it is stationary, or it keeps moving with the same speed in the same direction (I’ll keep doing what I’m doing!)
Newton’s third law of motion
when two objects interact with each other, they exert equal and opposite forces on each other (GAME ON!!!)
Parallelogram of forces
a geometrical method used to find the resultant of two forces that do not act along the same line (you just need to think outside the box)
Resultant force
a single force that has the same effect as all the forces acting on the object (I’m as powerful as all of you!)
