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Physics - Paper 2 > forces > Flashcards

forces Flashcards

1
Q

what is a vector quantity?

A

force, velocity, displacement, acceleration

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2
Q

what is a scalar quantity?

A

speed, distance, time, mass

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3
Q

is velocity vector or scalar?

A

vector

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4
Q

is speed vector or scalar?

A

scalar

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5
Q

what is a force?

A

a push or pull on an object that is caused by it interacting with something. they are either contact or non-contact.

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6
Q

what is an interaction pair?

A

a pair of forces that are equal and opposite and act on two interacting objects

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7
Q

what is mass?

A

the amount of something in an object

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8
Q

what is weight?

A

the force acting on an object due to gravity

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9
Q

what is weight measured in?

A

newtons (N)

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10
Q

what is mass measured in?

A

kilograms (kg)

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11
Q

equation for weight, mass, gfs

A

weight = mass x gfs

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12
Q

what is the resultant force?

A

the overall force on an object

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13
Q

How do you calculate the resultant force?

A

Subtract the vertical and horizontal values and state the value and direction.

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14
Q

What is the equation for work done?

A

Force x distance

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15
Q

How do you show the resultant force?

A

Do a scale drawing using bearings and using a protractor, measure the bearing.

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16
Q

What is an equilibrium?

A

If all the forces acting on an object combine to give zero

17
Q

What is elastic deformation?

A

It can go back to its original shape and length after the force has been removed. They’re called elastic.

18
Q

What is inelastic deformation?

A

If the force doesn’t return to its original shape after the force has been removed

19
Q

How do you work out force?

A

Spring constant x extension

20
Q

How do you work out weight?

A

Mass x gfs

21
Q

How do you work out elastic potential energy?

A

0.5 x spring constant x extension^2

Physics - Paper 2 (1 decks)

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