motion unit Flashcards

motion unit

1
Q

how far something has moved

A

distance

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2
Q

it is the distance and direction of an objects change in position from the starting point

A

displacement

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3
Q

it is the distance an object travel per unit of time

A

speed

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4
Q

is the total distance travelled divided by the total time travel

A

average speed

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5
Q

the speed at a given point

A

instantaneous speed

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6
Q

the speed of an object and the direction of its motion

A

velocity

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7
Q

is the rate of change of velocity

A

acceleration

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8
Q

a push or pull

A

force

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9
Q

a force where both force cancel each other out

A

net force

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10
Q

forces on an object that are equal sizes and opposite in direction

A

balanced forces

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11
Q

is a the tendency of an object to resist any change in its motion

A

inertia

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12
Q

is the force that opposes the sliding motion of two surfaces that are touching each other

A

friction

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13
Q

the acceleration of an object in the same direction as the net force on the object and the acceleration can be calculated from following equation

A

newtons second law of motion

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14
Q

the resistance created by two objects when sliding against each other

A

static fraction

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15
Q

the force acting on an object that is moving through air flowing in the opposite direction

A

air resistance

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16
Q

the universal force of attraction acting between all bodies of matter

A

gravity

17
Q

the force exerted on a body by gravity

A

weight

18
Q

the acceleration of a body traversing a circular path

A

centripetal acceleration

19
Q

the resistance created by any two objects when sliding against each other

A

sliding fraction

20
Q

when spinning a ball on a string or twirling a lasso the force of tension on the rope pulls the object towards the centre

A

centripetal force

21
Q

for every action there is an equal and opposite reaction

A

newton third law of motion

22
Q

a vector quantity

A

momentum