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IB Physics > Mechanics > Flashcards

Mechanics Flashcards

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0
Q

Rate of change in displacement with respect to time

A

Velocity

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1
Q

Distance of a point in a particular direction

A

Displacement

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2
Q

Distance travelled per unit time

A

Speed

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3
Q

A body will remain in rest or constant velocity unless an unbalanced force is applied

A

Newton 1

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4
Q

Rate of change of momentum directly proportional to the unbalanced force and takes place on the same direction

A

Newton 2

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5
Q

If A exerts a force on B, then B will exert an equal and opposite force on A

A

Newton 3

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6
Q

Product of mass and velocity

A

Linear momentum

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7
Q

For a system of isolated bodies, total momentum is constant

A

Law of conservation of linear momentum

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8
Q

Product of force and time for which it acts. Equal to the change in momentum that is produced

A

Impulse

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9
Q

Product of force and distance moved in the direction of a force

A

Work

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10
Q

Energy gains or loses due to a change in position in a gravitational field

A

Change in gravitational potential energy

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11
Q

Momentum and kinetic energy are conserved

A

Elastic collision

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12
Q

Momentum is conserved, but kinetic energy is not

A

Inelastic collision

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13
Q

Rate of working

A

Power

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14
Q

Useful energy out/useful energy in

A

Efficiency

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15
Q

Two forces applied in opposite directions

A

Tension

16
Q

Oppose the motion of a body through a fluid

A

Drag forces

17
Q

If equal to the weight, body will float

A

Upthrust

18
Q

One body slides over another

A

Kinetic friction

19
Q

A tendency for motion

A

Static friction

20
Q

Direction of velocity of motion is …. To the circle

A

Tangent

21
Q

If the magnitude of the velocity changes,

A

Tangential acceleration

22
Q

Law of gravitation applies to

A

Point masses

23
Q

Force per unit mass experienced by a point mass at a point

A

Gravitational field strength

IB Physics (7 decks)

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