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GSCE PHYSICS > Chapter 10 Force And Motion > Flashcards

Chapter 10 Force And Motion Flashcards

1
Q

Newtons second law

A

The accelerarion of an object is directly proporti al to the resultant force on an object and is inversely proportinal to to the mass of an object

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2
Q

What does force =

A

Force = mass x acceleration

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3
Q

What does mass =

A

Mass = force / acceleration

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4
Q

What does acceleration =

A

Accelerarion = force / mass

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5
Q

What is inertia

A

The tendency for an object to stay at rest or to continue in uniform motion(constant velocity)

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6
Q

Mass

A

Mass of object meausred in kg

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7
Q

What is weight and the formula

A

Weight of an object is the force of gravity acting on the object

Weight = mass x accelerarion due to gravity(g)

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8
Q

What is terminal velocity

A

The maximum velocity that an object can travel at in a fluid(liquid and or gas)

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9
Q

What is the stopping distance

A

The distance it takes for a vechile to stop is called the stopping distance

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10
Q

Braking distance

A

Distance taken to stop once the brakes are applied

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11
Q

Thinking distance

A

The distance travelled in between the driver realising he needs to brake or actually braking

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12
Q

How to calculate braking force

A

Acceleration = final v - initial v / 2 x displacement(s)

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13
Q

Momentum and the formula

A

A property of a moving object which depends on how much mass the object has and how fast it is moving

Momentum(p) = mass x velocity

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14
Q

How to find mass with momentum and velocity

A

Mass = momentum / velocity

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15
Q

How to find velocity with mass and momentum

A

Velocity = momentum(p) / mass

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16
Q

What is an elastic object

A

One which regains it shape when the force deforming it (squashing or stretching) are removed-when it is deformed the energy which caused it to deform is stored as the electric energy, which is released when the force is removed

17
Q

Compression

A

When a force is exerted on an object it will be compressed

18
Q

Tension

A

An object can be in tension when a force pulls on a object

19
Q

What is proportionality

A

Corresponding in size or amount to something else

20
Q

Hooks law and formula

A

The extension of a spring is proportinal to the force applied provided it’s limit of proportinailty is not exceeded

Force applied(N) = spring constant (k(n/m)) x extension changex(m)

21
Q

What if a speing pass it’s limit of proportianitly

A

The material will start to behave in a non linear way and will no longer to start to deform and regain it’s shape

GSCE PHYSICS (6 decks)

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