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frube Physics 2 > P8- Forces > Flashcards

P8- Forces Flashcards

1
Q

What is a scalar quantity?

A

Only has magnitude

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2
Q

What is a vector quantity?

A

Has both direction and magnitude

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3
Q

What is a force?

A

A push or pull that acts on an object due to interaction with another object

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4
Q

Is force scalar or vector?

A

Vector

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5
Q

What is a contact force?

A

When objects are physically touching

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6
Q

Name the main contact forces (4)

A

Friction, air resistance, tension, normal contact force

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7
Q

What are non contact forces?

A

Occur when objects are separated

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8
Q

What are the main three contact forces? (3)

A

Magnetic force, gravitational force, electrostatic force

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9
Q

What is the same about the interaction of two forces when objects interact with each other?

A

The sizes of the force

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10
Q

What is different about the interaction of two forces acting on an object?

A

They act in different directions

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11
Q

What is the resultant force?

A

A single force that has the same effect as two or more forces acting together

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12
Q

How do you calculate the resultant force of forces acting in the same direction?

A

Add the magnitudes

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13
Q

How do you calculate the resultant force of forces acting in different directions?

A

Calculate the difference

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14
Q

What is the size of the resultant force on an object if forces are balanced?

A

0

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15
Q

What is the name of the force that cats on an object due to gravity?

A

Weight

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16
Q

What is the centre of mass?

A

Point through which the weight of an objects is considered to act

17
Q

What does the length of the line of a free body diagram?

A

Magnitude

18
Q

What is defamation?

A

The change in the shape of an object

19
Q

What is elastic deformation?

A

The objects returns to its original shape when forces are removed

20
Q

What is inelastic deformation?

A

When an object does not return to its original shape when forces are removed

21
Q

What is hookes law?

A

F=ke
Extension is directly proportional to force

22
Q

What is the limit of proportionality?

A

The point when hookes law no longer applies when stretching a material

23
Q

How is spring constant calculated from a graph?

A

Calculate the gradient

frube Physics 2 (6 decks)

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