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Physics IGCSE > Chapter #3 (Forces and Motion) > Flashcards

Chapter #3 (Forces and Motion) Flashcards

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1
Q

What is the definition of gravity?

A

The force of attraction that exists between any two objects with mass.

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2
Q

What is weight measured in?

A

Newtons (N)

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3
Q

Does every object falls with the same acceleration close to the earths surface?

A

Yes

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4
Q

What force does the earth pull with each kg of matter?

A

10N or more accurately 9.8N

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5
Q

What is the weight of an object of a mass of 1kg?

A

9.8 N aprox. 10N

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6
Q

How do you calculate weight?

A

W=m x g

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7
Q

What is the acceleration of free fall on earth?

A

9.8N
10N

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8
Q

What is the symbol for the acceleration of free fall?

A

g

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9
Q

What is the definition of force?

A

The action of one body on a second body; unbalanced force causes changes in speed, shape, or direction.

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10
Q

What are the types of contact force? (4)

A

Friction
Upthrust
Air resistance
Thrust
Tension
Reaction

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11
Q

What are the types of non-contact forces?

A

Weight
Magnetism
Static electrical force

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12
Q

What is the meaning of newton (N)

A

The force required to give a mass of 1kg an acceleration of 1m/s2

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13
Q

What is air resistance?

A

Friction acting on an object moving through the air.

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14
Q

What is friction?

A

The force that acts when two surfaces rub over one another.

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15
Q

What is acceleration of free fall/acceleration due to gravity?

A

The acceleration of an object falling freely under gravity.

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16
Q

What is acceleration?

A

The rate of an object’s velocity.

17
Q

What is air resistance?

A

Friction acting on an object moving through the air.

18
Q

What is drag?

A

Friction that acts on an object as it moves through a fluid (liquid or gas).

19
Q

What is terminal velocity?

A

The greatest speed reached by on object moving through a fluid.

20
Q

How do you calculate force?

A

force=mass x acceleration

F= ma

21
Q

What is the force mass acceleration triangle?

A

F at the top

m on the bottom left

a on the bottom right

Physics IGCSE (13 decks)

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