P8 Forces In Balence Flashcards

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1
Q

displacement

A

distance in a given direction

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2
Q

driving force

A

force of a vehicle that makes it move (sometimes referred to as motive force)

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3
Q

forces

A

a force (in newtons, N) can change the motion of an object

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4
Q

free-body force diagram

A

a diagram that shows the forces acting on an object without any other objects or forces shown

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5
Q

friction

A

the force opposing the relative motion of two solid surfaces in contact

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6
Q

magnitude

A

the size or amount of a physical quantity

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7
Q

Newton’s first law of motion

A

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

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8
Q

Newton’s third law of motion

A

when two objects interact with each other, they exert equal and opposite forces on each other

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9
Q

parallelogram of forces

A

a geometrical method used to find the resultant of two forces that do not act along the same line

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10
Q

resultant force

A

a single force that has the same effect as all the forces acting on the object

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11
Q

scalar

A

a physical quantity, such as mass or energy, that has magnitude only (unlike a vector which has magnitude and
direction)

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12
Q

vector

A

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)

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