distance in a given direction - dispalcement, force of a vehicle that makes it move (sometimes referred to as motive force) - driving force, a force (in newtons, N) can change the motion of an object - forces, a diagram that shows the forces acting on an object without any other objects or forces shown - free-body force diagram, the force opposing the relative motion of two solid surfaces in contact - friction, the size or amount of a physical quantity - magnitude, 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 - Newton's first law of motion, when two objects interact with each other, they exert equal and opposite forces on each other - Newton's third law of motion, a geometrical method used to find the resultant of two forces that do not act along the same line - parallelogram of forces, a single force that has the same effect as all the forces acting on the object - resultant force, a physical quantity, such as mass or energy, that has magnitude only (unlike a vector which has magnitude and direction) - scalar, a vector is a physical quantity, such as displacement or velocity, that has a magnitude and a direction (unlike a scalar which has magnitude only) - vector,

Forces in balance KEYWORDS

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