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Physics P8-11 > P8 > Flashcards

P8 Flashcards

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1
Q

What is displacement

A

Displacement is distance without a change in direction

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2
Q

What is a vector quantity

A

A quantity with size and direction

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3
Q

What is a scalar quantity

A

A quantity with size but no direction

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4
Q

Give examples of vectors

A

Acceleration
Force
Weight
Velocity
Displacement

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5
Q

Give examples of scalars

A

Mass
Speed
Time
Distance
Energy
Power

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6
Q

What is the difference between distance and displacement

A

Displacement is distance without a change in direction. Displacement is a vector quantity, and distance is a scalar quantity.

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7
Q

What can a vector be represented by

A

An arrow
The length of the arrow represents the magnitude of the vector
The direction of the arrow indicates the direction of the vector

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8
Q

What can a force cause an object to do

A

Change shape
Change direction
Change speed

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9
Q

What is weight

A

The name given to the force of gravity on a mass

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10
Q

What is electrostatic force

A

Thr force between two charged objects

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11
Q

What is thrust

A

The force causing an object to move

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12
Q

What is air resistance

A

The friction of the air on a moving object

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13
Q

What is upthrust

A

The force of a fluid (such as water) pushing an object upwards

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14
Q

What is tension

A

Force transmitted through a cable or a string when pulled on by forces acting on its opposite ends

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15
Q

Contact force examples

A

Friction
Air resistance
Tension
Reaction force

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16
Q

Non-contact force examples

A

Gravitational force
Electrostatic force
Magnetic force
Nuclear force

17
Q

What is Newton’s third law

A

When two objects interact with each other they exert equal and oppostie forces on each other

18
Q

What is a balanced force

A

Newton’s first law of motion, if the resultant force acting on an object is zero, all the forces are said to be balanced.

19
Q

What is an unbalanced force

A

If the resultant force acting on an object is not zero, all the forces are said to be unbalanced.

20
Q

What is moment

A

Moment = force x distance

Physics P8-11 (1 decks)

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