Physics-P5 Flashcards

(12 cards)

1
Q

What is a contact force?

A

Two objects have to be touching for a force to act e.g friction

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2
Q

What is a non contact force?

A

When two objects don’t need to be touching for a force to act e.g magnetic force

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3
Q

What is mass measured in?

A

Kilograms kg

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4
Q

What is weight measured in?

A

Newtons N

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5
Q

What is the equation for working out weight?

A

Weight= mass X gravitational field strength

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6
Q

What do unbalanced forces cause?

A

Unbalanced forces cause acceleration

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7
Q

What do balanced forces cause?

A

No acceleration

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8
Q

What is acceleration?
What is it measured in?

A

Change in velocity in a certain amount of time

M/s squared

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9
Q

What two things add to stopping distance?

A

Thinking and breaking distance

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10
Q

What can increase thinking distance?

A

Driver fatigue
Tiredness
Distractions
Influence of drugs/alcohol

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11
Q

What can increase braking distance?

A

Poor road conditions
Worn tires

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12
Q

How do you work out the extension?

A

Loaded length - initial length

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