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GCSE Physics > P10 - Force and motion > Flashcards

P10 - Force and motion Flashcards

1
Q

What is the equation for stopping distance?

A

Stopping distance = Thinking distance + Breaking distance

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2
Q

What is the equation for Momentum?

A

Momentum (Kg m/s) = Mass x Velocity (m/s)

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3
Q

What is momentum?

A

The tendency of an object to keep on moving in the same direction

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4
Q

What is the symbol for Momentum?

A

p

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5
Q

What is the unit for Momentum?

A

Kg m/s

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6
Q

What is the unit for Mass?

A

Kg

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7
Q

What is the equation for momentum?

A

Momentum = mass x velocity

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8
Q

What is Newtons second law in P10?

A

The acceleration of an object is directly proportional to the force

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9
Q

What factors affect thinking distance?

A

Tiredness
Alcohol
Distractions

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10
Q

Which factors affect braking distance

A

How fast you are going
Road conditions
The condition of your tyres

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11
Q

What is elastic deformation?

A

When a spring is stretched it can return to its original length

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12
Q

What is inelastic deformation?

A

When a spring is stretched, its length is permanently altered

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13
Q

What is the limit of proportionality?

A

The length a spring can be stretched before it can no longer return to its original length

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14
Q

What is the Hookes Law equation?

A

Force applied = spring constant x Extension

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15
Q

What is the unit for Extension?

A

Metres

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16
Q

What is the unit for the Spring Constant?

A

Newtons per Metre

17
Q

What does the term ‘closed system’ mean?

A

A system with no external forces acting on it

18
Q

What is the conservation of Momentum?

A

The total moment before an event has the same momentum after the event

19
Q

What is the effect of force on acceleration?

A

The greater the resultant force, the greater the objects acceleration

20
Q

Why do cars make safety systems to prolong thr length of impact time?

A

The longer the impact time, the more the impact force is reduced

21
Q

What is inertia?

A

The tendency of an object to continue to move at the same motion - even after an event

22
Q

Explain why an egg is less likely to break when dropped onto soft foam rather than onto a concreate floor? (GCSE question)

A

Softer landing will reduce the impact force

The longer the impact time, the more the impact force is reduced

23
Q

What is the equation linking force, spring constant and extension?

A

Force = spring constant x extension

24
Q

How do you calculate Elastic potential energy?

A

Elastic potential energy = 1/2 x spring constant x extension°2

GCSE Physics (7 decks)

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