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Physics > force > Flashcards

force Flashcards

a push or pull of one object on another object, measured in Newtons (N)

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1
Q

force

A

a push or pull of one object on another object, measured in Newtons (N)

Spring constant x extension

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2
Q

Acceleration

A

Changing speed of an object

Velocity/time = acceleration

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3
Q

External force

A

Push or pull acting on an object

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4
Q

Gravity

A

the force Fg about 10.0 m/s2

(Fgrav) is the mass of an object multiplied by a grav.
It is NOT just the acceleration of gravity

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5
Q

At rest

A

Not moving

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6
Q

In motion

A

Moving

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7
Q

Newton’s first law

A

Objects do not change their movement without a force acting on them

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8
Q

Newton’s Second Law : F=ma

A

Newton (N) = kg • m/s2
F = m x a
force = mass x acceleration.

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9
Q

Constant

A

Not changing

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10
Q

Velocity

A

Metres per second

Distance / time

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11
Q

Constant acceleration

A

Vsquared x usquared = 2as

If there is no change in the velocity, we use this equation

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12
Q

Weight

A

Weight = mass / 10 or 9.8

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13
Q

Pull

A

To move something towards

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14
Q

Push

A

Move something away

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15
Q

Magnitude

A

Size of something

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16
Q

Vector

A

Magnitude with a direction

17
Q

Air resistance

A

Force caused by air

18
Q

Unbalanced forces

A

Object is moving, total net force >0

19
Q

Balanced forces

A

Object is moving, total net force = 0

20
Q

free body diagram

A

drawing that shows the forces acting on an object

21
Q

Mass

A

the amount of matter or stuff of an object (measure in kg)

22
Q

Terminal velocity

A

the constant speed that a freely falling object reaches when the resistance (of the way which it is falling) stops further acceleration.

23
Q

Contact force

A

Objects are touching

24
Q

Non contact force

A

Objects are not touching

25
Q

Newton’s Third Law : Equal Reaction

A

If one object applies a force to a second object, then the second object will apply an equal and opposite force to the first object.

26
Q

In motion

A

Moving

Physics (1 decks)

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