U1.2 Scalars And Vectors Flashcards

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1
Q

What is a scalar

A

A quantity that has magnitude only

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2
Q

What is a vector

A

A quantity that has magnitude and direction

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3
Q

Name 5 examples of scalars

A

Distance
Speed
Mass
Area
Volume
Time
Temperature
Energy
Power
Density
Charge

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4
Q

Name 5 examples of vectors

A

Displacement
velocity
Acceleration
Force
Momentum
Electric current
Weight
Moment of a force

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5
Q

What is the definition of a resultant force

A

A single force which replaces all the forces acting on an object or has the same effect

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6
Q

How can you find the magnitude of a resultant vector

A

Pythagoras’ theorem

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7
Q

How to we find the direction of a resultant vector

A

Trigonometry

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8
Q

When giving a resultant force what two things must you state

A

Magnitude and direction

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