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SCEINCE COMBINED Physics Paper 1 > Topic 2 > Flashcards

Topic 2 Flashcards

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1
Q

Terminal Velocity

A

Objects falling through fluid reach terminal velocity = resultant force acting on it is 0 and moving at constant pace

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2
Q

Define Proportional

A

Directly linked

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3
Q

Inversely Propportional

A

Opposite = negative gradient

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4
Q

Force=

A

Mass x Acceleration

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5
Q

Define Inertia

A

Remaining unchanged

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6
Q

Define Inertial Mass

A

A measure of how difficult it is to change the velocity of an object

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7
Q

For every action there is an…

A

Equal and opposite reaction

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8
Q

Momentum

A

Measure of how much motion an object has

All moving objects have momentum

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9
Q

Momentum (p)=

A

Mass x Velocity

P=MxV

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10
Q

Conservation of Momentum

In a collision or explosion, momentum is conserved.

Momentum before =

A

Momentum after

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11
Q

Total Stopping distance=

A

Thinking distance + braking distance

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12
Q

Braking distance =

A

Stopping distance - thinking distance

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13
Q

Faster speed =

A

bigger stopping distance

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14
Q

Define Force

A

Rate of change on momentum

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15
Q

Force (f) =

A

MxV - MxU
—————
t

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16
Q

If forces act opposite, you…

A

Subtract them

17
Q

If forces act the same, you…

A

Add them

18
Q

Newton’s First Law

A

Law of Inertia
When an object stays at rest as it is in motion
(stays in one spot whilst in motion)

19
Q

What is the Law of the Conservation of Energy?

A

Energy cannot be created or destroyed - it can only b transferred from stores

20
Q

Energy Stores

A 
Thermal Energy
Nuclear Energy
Kinetic Energy
Elastic Potential Energy
Gravitational Energy
Chemical Energy
21
Q

Energy Transfers

A 
By heating
By electricity
By forces
By sound 
By light
22
Q

Equation for Energy Efficiency

A

Useful Output Energy
—————————-
Total Input Energy

23
Q

Equation for Power

A

Energy
———-
Time

24
Q

GPE

A

Gravitational Potential Energy

25
Q

GPE=

A

mxgxh

Mass x gravitational field strength x vertical height

26
Q

Kinetic Energy (Joules) =

A

1/2 x mass x velocity2

1/2 x kg x m/s

27
Q

GPE = KE

A

Equal

SCEINCE COMBINED Physics Paper 1 (4 decks)

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