Linear Motion Flashcards

1
Q

Define linear motion and give an example

A

Movement of a body in a straight or curved line, where all parts move the same distance, in the same direction over the same time
Skeleton bob at top speed

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2
Q

Define direct force

A

A force applied through the center of mass resulting in linear motion

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3
Q

Define centre of mass

A

The point at which a body is balanced in all directions. The point from which weight appears to act

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4
Q

Define distance

A

The total length covered from start to finish positions (m)

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5
Q

Define displacement

A

The shortest straight-line route from start to finish positions (m)

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6
Q

Define speed and give the calculation

A

The rate of change in distance (m/s)
Speed = distance ÷ time taken

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7
Q

Define and give the calculation for velocity

A

The rate of change in displacement (m/s)
Speed = displacement ÷ time taken

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8
Q

Define acceleration/deceleration and give the calculation

A

The rate of change in velocity (m/s/s)
(Final velocity - initial velocity) ÷ time taken

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9
Q

What are distance/time graphs

A

A visual representation of the distance travelled plotted along the time taken

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10
Q

How do you calculate gradient

A

Gradient = change in y axis ÷ change in x axis

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11
Q

What are speed time graphs

A

A visual representation of the speed of motion plotted against the time taken

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12
Q

What are velocity time graphs

A

A visual representation of the velocity of motion plotted against the time taken

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